First Busey (BUSE) 10-Q7 May 202020 Q1 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2020	May 07, 2020
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2020
Entity File Number	0-15950
Entity Registrant Name	FIRST BUSEY CORPORATION
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	37-1078406
Entity Address, Address Line One	100 W. University Ave.
Entity Address, City or Town	Champaign
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	61820
City Area Code	217
Local Phone Number	365-4544
Title of 12(b) Security	Common Stock
Trading Symbol	BUSE
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		54,401,208
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000314489
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS (Un

CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 133,695	$ 136,546
Interest-bearing deposits	209,153	392,742
Total cash and cash equivalents	342,848	529,288
Debt securities available for sale	1,765,945	1,648,257
Equity securities	4,936	5,952
Loans held for sale, at fair value	89,943	68,699
Portfolio loans (net of allowance for credit losses 2020 $84,384; 2019 $53,748)	6,661,115	6,633,501
Premises and equipment, net	149,772	151,267
Right of use asset	9,074	9,490
Goodwill	311,536	311,536
Other intangible assets, net	59,036	61,593
Cash surrender value of bank owned life insurance	174,495	173,595
Other assets	152,705	102,551
Total assets	9,721,405	9,695,729
Deposits:
Noninterest-bearing	1,910,673	1,832,619
Interest-bearing	6,062,560	6,069,777
Total deposits	7,973,233	7,902,396
Securities sold under agreements to repurchase	167,250	205,491
Short-term borrowings	21,358	8,551
Long-term debt	35,595	83,600
Senior notes, net of unamortized issuance costs	39,708	39,674
Subordinated notes, net of unamortized issuance costs	59,273	59,248
Junior subordinated debt owed to unconsolidated trusts	71,347	71,308
Lease liability	9,150	9,552
Other liabilities	126,906	95,475
Total liabilities	8,503,820	8,475,295
Outstanding commitments and contingent liabilities (see Note 10)
Stockholders' Equity
Common stock, $.001 par value, authorized 66,666,667 shares; 55,910,733 shares issued	56	56
Additional paid-in capital	1,249,301	1,248,216
Accumulated deficit	(27,599)	(14,813)
Accumulated other comprehensive income (loss)	33,101	14,960
Total stockholders' equity before treasury stock	1,254,859	1,248,419
Treasury stock at cost, 1,509,525 and 1,121,961 shares, respectively	(37,274)	(27,985)
Total stockholders' equity	1,217,585	1,220,434
Total liabilities and stockholders' equity	$ 9,721,405	$ 9,695,729
Common shares outstanding at period end	54,401,208	54,788,772

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
CONSOLIDATED BALANCE SHEETS (Unaudited)
Portfolio Loans, allowance for loan losses (in dollars)	$ 84,384	$ 53,748
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	66,666,667	66,666,667
Common stock, shares issued	55,910,733	55,910,733
Treasury Stock, Shares	1,509,525	1,121,961

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest income:
Interest and fees on loans	$ 72,536	$ 71,789
Interest and dividends on investment securities:
Taxable interest income	9,508	10,184
Non-taxable interest income	1,151	1,076
Other interest income	1,238	1,232
Total interest income	84,433	84,281
Interest expense:
Deposits	12,227	12,500
Federal funds purchased and securities sold under agreements to repurchase	408	583
Short-term borrowings	67	191
Long-term debt	423	579
Senior notes	400	400
Subordinated notes	731	731
Junior subordinated debt owed to unconsolidated trusts	744	914
Total interest expense	15,000	15,898
Net interest income	69,433	68,383
Provision for loan losses	17,216	2,111
Net interest income after provision for loan losses	52,217	66,272
Non-interest income:
Mortgage revenue	1,381	1,945
Income on bank owned life insurance	1,057	978
Net gains on sales of securities	1,574	(174)
Unrealized (losses) gains recognized on equity securities	(987)	216
Other income	823	2,074
Total non-interest income	27,517	25,945
Non-interest expense:
Salaries, wages and employee benefits	34,003	32,341
Data processing	4,395	4,401
Net occupancy expense of premises	4,715	4,202
Furniture and equipment expenses	2,449	2,095
Professional fees	1,824	3,187
Amortization of intangible assets	2,557	2,094
Other expense	10,571	8,843
Total non-interest expense	60,514	57,163
Income before income taxes	19,220	35,054
Income taxes	3,856	9,585
Net income	$ 15,364	$ 25,469
Basic earnings per common share (in dollars per share)	$ 0.28	$ 0.48
Diluted earnings per common share (in dollars per share)	0.28	0.48
Dividends declared per share of common stock (in dollars per share)	$ 0.22	$ 0.21
Wealth management fees
Non-interest income:
Non-interest income	$ 11,555	$ 9,029
Fees for customer services
Non-interest income:
Non-interest income	8,361	8,097
Remittance processing
Non-interest income:
Non-interest income	$ 3,753	$ 3,780

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)
Net income	$ 15,364	$ 25,469
Unrealized gains (losses) on debt securities available for sale:
Net unrealized holding gains (losses) on debt securities available for sale, net of taxes	21,497	4,859
Net unrealized losses on debt securities transferred from held to maturity to available for sale, net of taxes		3,416
Reclassification adjustment for realized (gains) losses on debt securities	(1,108)	132
Net change in unrealized gains (losses) on debt securities available for sale	20,389	8,407
Unrealized gains (losses) on cash flow hedges:
Net unrealized holding gains (losses) on cash flow hedges, net of taxes	(2,237)
Reclassification adjustment for realized losses (gains) on cash flow hedges	(11)
Net change in unrealized gains (losses) on derivative instruments	(2,248)
Net change in accumulated other comprehensive income (loss)	18,141	8,407
Total comprehensive income	$ 33,505	$ 33,876

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)
Unrealized holding gains (losses) on debt securities available for sale, Tax Effect	$ (8,589)	$ (1,940)
Unrealized gains on debt securities transferred from held to maturity to available for sale, Tax Effect		(1,364)
Amounts reclassified from accumulated other comprehensive income, Tax Effect	448	$ (52)
Tax expense on unrealized holding (losses) gains on cash flow hedges	892
Tax expense on reclassification adjustment for realized losses (gains) on cash flow hedges included in net income	$ 4

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated (Deficit)	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Beginning balance at Dec. 31, 2018	$ 49	$ 1,080,084	$ (72,167)	$ (6,812)	$ (6,190)	$ 994,964
Beginning Balance (in shares) at Dec. 31, 2018	48,874,836
Increase (decrease) in shareholders' equity
Net income			25,469			25,469
Other comprehensive income (loss)				8,407		8,407
Issuance of treasury stock for employee stock purchase plan		50			222	272
Issuance of treasury stock for employee stock purchase plan (in shares)	11,731
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax		(171)			171
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax (in shares)	9,070
Net issuance of treasury stock for stock options exercised, net of shares redeemed and related tax		(72)			72
Net issuance of treasury stock for stock options exercised, net of shares redeemed and related tax (in shares)	3,838
Cash dividends common stock			(10,266)			(10,266)
Stock dividend equivalents restricted stock units		161	(161)
Stock-based compensation		1,014				1,014
Stock issued in acquisition of Banc Ed, net of stock issuance costs	$ 7	166,274				166,281
Stock issued in acquisition of Banc Ed, net of stock issuance costs (in shares)	6,725,152
Ending balance at Mar. 31, 2019	$ 56	1,247,340	(57,125)	1,595	(5,725)	1,186,141
Ending Balance (in shares) at Mar. 31, 2019	55,624,627
Increase (decrease) in shareholders' equity
Cumulative change in accounting principal			(15,922)			(15,922)
Beginning balance at Dec. 31, 2019	$ 56	1,248,216	(14,813)	14,960	(27,985)	1,220,434
Beginning Balance (in shares) at Dec. 31, 2019	54,788,772
Increase (decrease) in shareholders' equity
Net income			15,364			15,364
Other comprehensive income (loss)				18,141		18,141
Repurchase of stock					(9,672)	(9,672)
Repurchase of stock (in shares)	(407,850)
Issuance of treasury stock for employee stock purchase plan		(38)			269	231
Issuance of treasury stock for employee stock purchase plan (in shares)	14,236
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax		(179)			104	(75)
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax (in shares)	5,509
Net issuance of treasury stock for stock options exercised, net of shares redeemed and related tax		(10)			10
Net issuance of treasury stock for stock options exercised, net of shares redeemed and related tax (in shares)	541
Cash dividends common stock			(12,055)			(12,055)
Stock dividend equivalents restricted stock units		173	(173)
Stock-based compensation		1,139				1,139
Ending balance at Mar. 31, 2020	$ 56	$ 1,249,301	$ (27,599)	$ 33,101	$ (37,274)	$ 1,217,585
Ending Balance (in shares) at Mar. 31, 2020	54,401,208

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited)
Cash dividends, common stock (in dollars per share)	$ 0.22	$ 0.21
Stock dividends, restricted stock units (in dollars per share)	$ 0.22	$ 0.21

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities
Net income	$ 15,364	$ 25,469
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	17,216	2,111
Amortization of intangible assets	2,557	2,094
Amortization of mortgage servicing rights	1,276	536
Depreciation and amortization of premises and equipment	3,165	2,684
Net amortization (accretion) of premium (discount) on portfolio loans	(2,487)	(2,694)
Net amortization (accretion) of premium (discount) on investment securities	1,869	1,355
Net amortization (accretion) of premium (discount) on time deposits	(374)	(333)
Net amortization (accretion) of premium (discount) on FHLB advances and other borrowings	93	34
Impairment of OREO		36
Impairment of mortgage servicing rights	177
(Gain) loss on sales of securities, net	(1,556)	183
(Gain) loss on sale of loans, net	(3,900)	(2,141)
(Gain) loss on sale of OREO	1	(3)
(Gain) loss on sale of premises and equipment	37	24
Realized (gain) loss on preferred stock and equity securities	(18)	(8)
(Gain) loss on life insurance proceeds	(14)
Provision for deferred income taxes	1,722	1,751
Stock-based and non-cash compensation	1,139	1,014
Decrease in deferred compensation		(466)
Increase in cash surrender value of bank owned life insurance	(1,043)	(978)
Mortgage loans originated for sale	(182,203)	(83,950)
Proceeds from sales of mortgage loans	165,008	93,463
Net change in operating assets and liabilities:
Decrease in other assets	991	2,228
(Decrease) increase in other liabilities	(1,194)	(5,943)
Net cash (used in) provided by operating activities	18,813	36,250
Cash Flows from Investing Activities
Purchases of debt securities available for sale	(273,992)	(125,464)
Proceeds from sales of equity securities	29	958
Proceeds from sales of debt securities available for sale		141,798
Proceeds from paydowns and maturities of debt securities held to maturity		13,822
Proceeds from paydowns and maturities of debt securities available for sale	158,536	43,435
Net cash (received) paid in acquisitions		(49,387)
Net change in loans	(64,338)	(72,655)
Cash paid for premiums on bank-owned life insurance	(111)
Purchases of premises and equipment	(2,314)	(1,065)
Proceeds from life insurance	274
Proceeds from disposition of premises and equipment	607
Proceeds from sale of OREO	81	147
Net cash (used in) provided by investing activities	(181,228)	(48,411)
Cash Flows from Financing Activities
Net change in deposits	71,211	75,034
Net change in federal funds purchased and securities sold under agreements to repurchase	(38,241)	(19,318)
Proceeds from other borrowings	20,000	60,000
Repayment of other borrowings	(54,000)	(1,500)
Net change in short-term FHLB advances	(1,193)	(1,121)
Cash dividends paid	(12,055)	(10,266)
Purchase of treasury stock	(9,672)
Cash paid for withholding taxes on share-based payments	(75)
Common stock issuance costs		(234)
Net cash (used in) provided by financing activities	(24,025)	102,595
Net (decrease) increase in cash and cash equivalents	(186,440)	90,434
Cash and cash equivalents, beginning of period	529,288	239,973
Cash and cash equivalents, ending of period	342,848	330,407
Cash Payments for:
Interest	14,391	14,876
Income taxes	500	690
Non-cash Investing and Financing Activities:
OREO acquired in settlement of loans	$ 578	577
Transfer of debt securities held to maturity to available for sale		$ 573,639

Significant Accounting Policies

Significant Accounting Policies	3 Months Ended
Significant Accounting Policies	Mar. 31, 2020
Significant Accounting Policies
Significant Accounting Policies	Note 1: Significant Accounting Policies Basis of Financial Statement Presentation When preparing these unaudited consolidated financial statements of First Busey Corporation and its subsidiaries (“First Busey,” “Company,” “we,” or “our”), a Nevada corporation, we have assumed that you have read the audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2019 (“2019 Form 10-K”). These interim unaudited consolidated financial statements serve to update our 2019 Form 10-K and may not include all information and notes necessary to constitute a complete set of financial statements. We prepared these unaudited consolidated financial statements in accordance with accounting principles generally accepted in the United States of America (“GAAP”). We have eliminated intercompany accounts and transactions. We have also reclassified certain prior year amounts to conform to the current period presentation. These reclassifications did not have a material impact on our consolidated financial condition or results of operations. In our opinion, the unaudited consolidated financial statements reflect all normal, recurring adjustments needed to present fairly our results for the interim periods. The results of operations for interim periods are not necessarily indicative of the results that may be expected for the full year or any other interim period. Impacts of COVID-19 First Busey is positioned to execute its mission as an essential community resource during these challenging times. The coronavirus disease 2019 (“COVID-19”) is not only impacting health and safety around the world, it is causing significant economic disruption for both individuals and businesses, making the Company’s promise of support even more important to customers. In the face of the challenges and risks posed by COVID-19, the Company remains resolute in its focus on protecting the strength and flexibility of its balance sheet. The progression of the COVID-19 pandemic in the United States began to negatively impact the Company’s results of operations during the quarter ended March 31, 2020. Going forward, COVID-19 can be expected to have a complex and significant adverse impact on the economy, the banking industry and First Busey in future fiscal periods, all subject to a high degree of uncertainty as it relates to both timing and severity. Primary areas of impact in the future for First Busey may include margin compression, increased provision expense, a deterioration in asset quality and decreased wealth management fees and fees for customer services. Subsequent Events The Company has evaluated subsequent events for potential recognition and/or disclosure through the date the unaudited consolidated financial statements included in this Quarterly Report on Form 10-Q were issued. There were no significant subsequent events for the quarter ended March 31, 2020 through the issuance date of these unaudited consolidated financial statements that warranted adjustment to or disclosure in the unaudited consolidated financial statements. Use of Estimates In preparing the accompanying unaudited consolidated financial statements in conformity with GAAP, the Company’s management is required to make estimates and assumptions that affect the amounts reported in the financial statements and the disclosures provided. Actual results could differ from those estimates. Material estimates which are particularly susceptible to significant change in the near term relate to the fair value of investment securities, fair value of assets acquired and liabilities assumed in business combinations, goodwill, income taxes and the determination of the allowance. Impact of recently adopted accounting standards On January 1, 2020, First Busey adopted Accounting Standards Update (“ASU”) 2016-13 Financial Instruments – Credit Losses (“Topic 326”): Measurement of Credit Losses on Financial Instruments , as amended, which replaces the incurred loss methodology with an expected loss methodology that is referred to as the current expected credit loss (“CECL”) methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. It also applies to off-balance-sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with Topic 842 on leases. In addition, Accounting Standards Codification (“ASC”) 326 made changes to the accounting for available-for-sale debt securities. One such change is to require credit losses to be presented as an allowance rather than as a write-down on available-for-sale debt securities management does not intend to sell or believes that it is more likely than not they will be required to sell. First Busey adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Results for reporting periods beginning after January 1, 2020 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP which includes a change in terminology from Allowance/Provision for Loan Losses to Allowance/Provision for Credit Losses. First Busey recorded a net decrease to retained earnings of $15.9 million as of January 1, 2020 for the cumulative effect of adopting ASC 326. This transition adjustment included $12.0 million in allowance for credit losses on loans and $3.9 million in reserve for off-balance-sheet credit exposures. First Busey adopted ASC 326 using the prospective transition approach for financial assets purchased with credit deterioration (“PCD”) that were previously classified as purchased credit impaired (“PCI”) and accounted for under ASC 310-30. In accordance with the standard, management did not reassess whether PCI assets met the criteria of PCD assets as of the date of adoption. In accordance with ASC 326, the amortized cost basis of PCD assets were adjusted to reflect an allowance for credit losses for any remaining credit discount. Subsequent changes in expected cash flows will be adjusted through the allowance for credit losses. The noncredit discount will be accreted into interest income at the effective interest rate as of January 1, 2020. The following table illustrates the impact of ASC 326 (dollars in thousands) : January 1, 2020 Pre-tax Post ASC 326 Pre-ASC 326 impact of ASC 326 Adoption Adoption Adoption Assets: Allowance Commercial $ 19,006 $ 18,291 $ 715 Commercial real estate 30,496 21,190 9,306 Real estate construction 6,158 3,204 2,954 Retail real estate 13,787 10,495 3,292 Retail other 1,134 568 566 Total allowance for credit losses $ 70,581 $ 53,748 $ 16,833 Liabilities: Reserve for off-balance-sheet credit exposures $ 5,492 — 5,492 Allowance-debt securities available for sale Debt securities available for sale are not within the scope of CECL, however, the accounting for credit losses on these securities is affected by ASC 326-30. A debt security available for sale is impaired if the fair value of the security declines below its amortized cost basis. To determine the appropriate accounting, the Company must first determine if it intends to sell the security or if it is more likely than not that it will be required to sell the security before the fair value increases to at least the amortized cost basis. If either of those selling events is expected, the Company will write down the amortized cost basis of the security to its fair value. This is achieved by writing off any previously recorded allowance, if applicable, and recognizing any incremental impairment through earnings. If the Company does not intend to sell the security nor believes it more likely than not will be required to sell the security before the fair value recovers to the amortized cost basis, the Company must determine whether any of the decline in fair value has resulted from a credit loss, or if it is entirely the result of noncredit factors. The Company considers the following factors in assessing whether the decline is due to a credit loss: ● Extent to which the fair value is less than the amortized cost basis. ● Adverse conditions specifically related to the security, an industry, or a geographic area (for example, changes in the financial condition of the issuer of the security, or in the case of an asset-backed debt security, in the financial condition of the underlying loan obligors). ● Payment structure of the debt security and the likelihood of the issuer being able to make payments that increase in the future. ● Failure of the issuer of the security to make scheduled interest or principal payments. ● Any changes to the rating of the security by a rating agency. Impairment related to a credit loss must be measured using the discounted cash flow method. Credit loss recognition is limited to the fair value of the security. The impairment is recognized by establishing an allowance for credit losses through provision for credit losses. Impairment related to noncredit factors is recognized in accumulated other comprehensive income, net of applicable taxes. Accrued interest receivable for debt securities available for sale totaled $6.8 million at March 31, 2020 and is excluded from the estimate of credit losses. Accrued interest receivable is reported in Other Assets on the unaudited Consolidated Balance Sheets. Allowance – portfolio loans The allowance for credit losses is a significant estimate in the Company’s unaudited Consolidated Balance Sheet, affecting both earnings and capital. The allowance for credit losses is a valuation account that is deducted from the portfolio loans’ amortized cost bases to present the net amount expected to be collected on the portfolio loans. Portfolio loans are charged off against the allowance when management believes the uncollectibility of a loan balance is confirmed. Recoveries do not exceed the aggregate of amounts previously charged-off. The allowance for credit losses is established through provision for credit loss expense charged to income. A loan’s amortized cost basis is comprised of the unpaid principal balance of the loan, accrued interest receivable, purchase premiums or discounts, and net deferred origination fees or costs. The Company has estimated its allowance on the amortized cost basis, exclusive of accrued interest receivable. The Company writes-off uncollectible accrued interest receivable in a timely manner and has elected to not measure an allowance for accrued interest receivable. The Company presents the aggregate amount of accrued interest receivable for all financial instruments in other assets on the unaudited Consolidated Balance Sheets and the balance of accrued interest receivable is disclosed in “Note 14: Fair Value Measurements.” Its methodology influences, and is influenced by, the Company’s overall credit risk management processes. The allowance for credit losses is managed in accordance with GAAP to provide an adequate reserve for expected credit losses that is reflective of management’s best estimate of what is expected to be collected. The allowance for credit losses is measured on a collective pool basis when similar risk characteristics exist. Loans that do not share risk characteristics are evaluated on an individual basis. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions and reasonable and supportable forecasts that affect the collectability of the amortized cost basis. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwiring standards, portfolio mix, delinquency level, or term as well as for changes in environmental conditions such as changes in unemployment rates, property values and other relevant factors. The calculation also contemplates that the Company may not be able to make or obtain such forecasts for the entire life of the financial assets and requires a reversion to historical credit loss information. At implementation, the Company selected an 8 quarter forecast period with an immediate reversion to historical loss rates as management felt this period could be reasonably forecasted and was consistent with forecast periods used in other areas of finance. During the first quarter of 2020, the Company reduced its reasonable and supportable forecast period from 8 quarters to 4 quarters. Due to rapidly changing forecasts around the impact of COVID-19, the Company does not believe it has the ability to incorporate reasonable and supportable forecasts into its CECL models extending beyond 4 quarters. Ongoing impacts of the CECL methodology will be dependent upon changes in economic conditions and forecasts, originated and acquired loan portfolio composition, credit performance trends, portfolio duration, and other factors. Reserve for Off-balance-sheet credit exposures In estimating expected credit losses for off-balance-sheet credit exposures, the Company is required to estimate expected credit losses over the contractual period in which it is exposed to credit risk via a present contractual obligation to extend credit, unless that obligation is unconditionally cancellable by the issuer. To be considered unconditionally cancelable for accounting purposes, the Company must have the ability to, at any time, with or without cause, refuse to extend credit under the commitment. Off-balance-sheet credit exposure segments share the same risk characteristics as portfolio loans. The Company incorporates a probability of funding and utilizes the allowance for credit losses loss rates to calculate the reserve. The reserve for off-balance-sheet credit exposure is carried on the balance sheet in other liabilities rather than as a component of the allowance. The reserve for off-balance-sheet credit exposure is adjusted as a provision for off-balance-sheet credit exposure reported as a component of non-interest expense in the accompanying unaudited Consolidated Statement of Income.

Acquisitions

Acquisitions	3 Months Ended
Acquisitions	Mar. 31, 2020
Acquisitions
Acquisitions	Note 2: Acquisitions The Banc Ed Corp. On January 31, 2019, the Company completed its acquisition of The Banc Ed Corp. (“Banc Ed”). TheBANK of Edwardsville (“TheBANK”), Banc Ed’s wholly-owned bank subsidiary, was operated as a separate subsidiary from the completion of the acquisition until October 4, 2019 when it was merged with and into Busey Bank. At that time, TheBANK’s banking centers became banking centers of Busey Bank. Under the terms of the merger agreement with Banc Ed, at the effective time of the acquisition, each share of Banc Ed common stock issued and outstanding was converted into the right to receive 8.2067 shares of the Company’s common stock, cash in lieu of fractional shares and $111.53 in cash consideration per share. The market value of the 6.7 million shares of First Busey common stock issued at the effective time of the acquisition was approximately $166.5 million based on First Busey’s closing stock price of $24.76 on January 31, 2019. This transaction was accounted for using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed, and consideration exchanged was recorded at estimated fair values on the date of acquisition. As the total consideration paid for Banc Ed exceeded the net assets acquired, goodwill of $41.4 million was recorded as a result of the acquisition. Goodwill recorded in the transaction, which reflected the synergies expected from the acquisition and expansion within the St. Louis MSA, is not tax deductible and was assigned to the Banking operating segment. First Busey did not incur any expenses related to the acquisition of Banc Ed for the three months ended March 31, 2020. First Busey incurred $1.0 million in pre-tax expenses related to the acquisition of Banc Ed for the three months ended March 31, 2019, primarily for professional and legal fees, all of which are reported as a component of non-interest expense in the accompanying unaudited Consolidated Statement of Income. The following table presents the estimated fair value of Banc Ed’s assets acquired and liabilities assumed as of January 31, 2019 (dollars in thousands) : Fair Value Assets acquired: Cash and cash equivalents $ 42,013 Securities 692,716 Loans held for sale 2,157 Portfolio loans 873,336 Premises and equipment 32,156 Other intangible assets 32,617 Mortgage servicing rights 6,946 Other assets 57,332 Total assets acquired 1,739,273 Liabilities assumed: Deposits 1,439,203 Other borrowings 63,439 Other liabilities 20,153 Total liabilities assumed 1,522,795 Net assets acquired $ 216,478 Consideration paid: Cash $ 91,400 Common stock 166,515 Total consideration paid $ 257,915 Goodwill $ 41,437 The following table provides the unaudited pro forma information for the results of operations for the three months ended March 31, 2019, as if the acquisition had occurred January 1, 2019. The pro forma results combine the historical results of Banc Ed into the Company’s unaudited Consolidated Statements of Income, including the impact of purchase accounting adjustments including loan discount accretion, intangible assets amortization, deposit accretion and premises accretion, net of taxes. The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the results that would have been obtained had the acquisition actually occurred on January 1, 2019. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or asset dispositions ( dollars in thousands, except per share amounts) : Pro Forma Three Months Ended March 31, 2019 Total revenues (net interest income plus non-interest income) $ 100,652 Net income 27,390 Diluted earnings per common share 0.49 Investors’ Security Trust Company On August 31, 2019, the Company completed the previously announced acquisition by Busey Bank of Investors’ Security Trust Company (“IST”), a Fort Myers, Florida wealth management firm. While the partnership is expected to add to the Company’s wealth management offerings, it is not expected to have any immediate, material impact on the Company’s earnings or overall business. This transaction was accounted for using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed, and consideration exchanged was recorded at estimated fair values on the date of acquisition. First Busey incurred $0.1 million in pre-tax expenses related to the acquisition of IST for the three months ended March 31, 2020, which is reported as a component of non-interest expense in the accompanying unaudited Consolidated Statements of Income. First Busey incurred $0.2 million in pre-tax expenses related to the acquisition of IST for the three months ended March 31, 2019, primarily for professional and legal fees, which are reported as a component of non-interest expense in the accompanying unaudited Consolidated Statements of Income.

Securities

Securities	3 Months Ended
Securities	Mar. 31, 2020
Securities
Securities	Note 3: Securities The table below provides the amortized cost, unrealized gains and losses and fair values of debt securities summarized by major category (dollars in thousands) : Gross Gross Allowance Amortized Unrealized Unrealized for Credit Fair March 31, 2020: Cost Gains Losses Losses Value Debt securities available for sale U.S. Treasury securities $ 44,545 $ 849 $ — $ — $ 45,394 Obligations of U.S. government corporations and agencies 87,787 2,829 (42) — 90,574 Obligations of states and political subdivisions 278,741 6,359 (353) — 284,747 Commercial mortgage-backed securities 239,284 6,139 (2) — 245,421 Residential mortgage-backed securities 966,805 34,071 (19) — 1,000,857 Corporate debt securities 99,061 528 (637) — 98,952 Total $ 1,716,223 $ 50,775 $ (1,053) $ — $ 1,765,945 Gross Gross Amortized Unrealized Unrealized Fair December 31, 2019: Cost Gains Losses Value Debt securities available for sale U.S. Treasury securities $ 51,472 $ 265 $ — $ 51,737 Obligations of U.S. government corporations and agencies 160,364 2,684 (48) 163,000 Obligations of states and political subdivisions 262,492 5,810 (11) 268,291 Commercial mortgage-backed securities 137,733 1,700 (146) 139,287 Residential mortgage-backed securities 912,308 10,282 (624) 921,966 Corporate debt securities 102,696 1,280 — 103,976 Total $ 1,627,065 $ 22,021 $ (829) $ 1,648,257 The amortized cost and fair value of debt securities, by contractual maturity or pre-refunded date, are shown below. Mortgages underlying mortgage-backed securities may be called or prepaid; therefore, actual maturities could differ from the contractual maturities. All mortgage-backed securities were issued by U.S. government agencies and corporations (dollars in thousands) . Debt securities available for sale Amortized Fair March 31, 2020: Cost Value Due in one year or less $ 142,273 $ 142,758 Due after one year through five years 275,344 282,349 Due after five years through ten years 244,765 252,843 Due after ten years 1,053,841 1,087,995 Total $ 1,716,223 $ 1,765,945 Realized gains and losses related to sales and calls of debt securities available for sale are summarized as follows (dollars in thousands) : Three Months Ended March 31, 2020 2019 Gross security gains $ 1,561 $ — Gross security (losses) (5) (183) Net gains (losses) on sales of securities (1) $ 1,556 $ (183) (1) Net (losses) gains on sales of securities reported on the unaudited Consolidated Statements of Income includes sale of equity securities, excluded in this table. Debt securities with carrying amounts of $647.8 million and $704.4 million on March 31, 2020 and December 31, 2019, respectively, were pledged as collateral for public deposits, securities sold under agreements to repurchase and for other purposes as required or permitted by law. The following information pertains to debt securities with gross unrealized losses, aggregated by investment category and the length of time that individual securities have been in a continuous loss position (dollars in thousands): Less than 12 months, gross 12 months or more, gross Total, gross Fair Unrealized Fair Unrealized Fair Unrealized March 31, 2020: Value Losses Value Losses Value Losses Debt securities available for sale U.S. Treasury securities $ — $ — $ — $ — $ — $ — Obligations of U.S. government corporations and agencies 6,006 (42) — — 6,006 (42) Obligations of states and political subdivisions 15,445 (353) — — 15,445 (353) Commercial mortgage-backed securities 8,522 (2) — — 8,522 (2) Residential mortgage-backed securities 626 (5) 1,417 (14) 2,043 (19) Corporate debt securities 41,117 (637) — — 41,117 (637) Total temporarily impaired securities $ 71,716 $ (1,039) $ 1,417 $ (14) $ 73,133 $ (1,053) Less than 12 months, gross 12 months or more, gross Total, gross Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2019: Value Losses Value Losses Value Losses Debt securities available for sale U.S. Treasury securities $ — $ — $ — $ — $ — $ — Obligations of U.S. government corporations and agencies 6,362 (48) — — 6,362 (48) Obligations of states and political subdivisions (1) 4,981 (11) 1,548 — 6,529 (11) Commercial mortgage-backed securities 33,322 (144) 2,044 (2) 35,366 (146) Residential mortgage-backed securities 78,326 (245) 50,259 (379) 128,585 (624) Corporate debt securities — — — — — — Total temporarily impaired securities $ 122,991 $ (448) $ 53,851 $ (381) $ 176,842 $ (829) (1) Unrealized losses for 12 months or more, gross, was less than one thousand dollars. Debt securities available for sale are not within the scope of CECL, however, the accounting for credit losses on these securities is affected by ASC 326-30. As of March 31, 2020, the Company’s debt security portfolio consisted of 1,143 securities. The total number of debt securities in the investment portfolio in an unrealized loss position as of March 31, 2020 was 45 and represented an unrealized loss of 1.42% of the aggregate fair value. The unrealized losses relate to changes in market interest rates and market conditions that do not represent credit-related impairments. Furthermore, the Company does not intend to sell such securities and it is more likely than not that the Company will recover the amortized cost prior to being required to sell the debt securities. Full collection of the amounts due according to the contractual terms of the debt securities is expected; therefore, the impairment related to noncredit factors is recognized in accumulated other comprehensive income, net of applicable taxes, at March 31, 2020. As of March 31, 2020, the Company did not hold general obligation bonds of any single issuer, the aggregate of which exceeded 10% of the Company’s stockholders’ equity.

Portfolio loans

Portfolio loans	3 Months Ended
Portfolio loans	Mar. 31, 2020
Portfolio loans
Portfolio loans	Note 4: Portfolio loans The distribution of portfolio loans is as follows (dollars in thousands) : March 31, 2020 December 31, 2019 Commercial $ 1,767,191 $ 1,748,368 Commercial real estate 2,825,003 2,793,417 Real estate construction 448,313 401,861 Retail real estate 1,656,628 1,693,769 Retail other 48,364 49,834 Portfolio loans $ 6,745,499 $ 6,687,249 Allowance (84,384) (53,748) Portfolio loans, net $ 6,661,115 $ 6,633,501 Net deferred loan origination costs included in the table above were $6.4 million as of March 31, 2020 and $6.2 million as of December 31, 2019. Net accretable purchase accounting adjustments included in the table above reduced loans by $17.7 million as of March 31, 2020 and $20.2 million as of December 31, 2019. During the first quarter of 2020, the Company purchased $43.9 million of retail real estate loans. The Company utilizes a loan grading scale to assign a risk grade to all of its loans. A description of the general characteristics of each grade is as follows: ● Pass - This category includes loans that are all considered acceptable credits, ranging from investment or near investment grade, to loans made to borrowers who exhibit credit fundamentals that meet or exceed industry standards. ● Watch- This category includes loans that warrant a higher than average level of monitoring to ensure that weaknesses do not cause the inability of the credit to perform as expected. These loans are not necessarily a problem due to other inherent strengths of the credit, such as guarantor strength, but have above average concern and monitoring. ● Special mention- This category is for “Other Assets Specially Mentioned” loans that have potential weaknesses, which may, if not checked or corrected, weaken the asset or inadequately protect the Company’s credit position at some future date. ● Substandard- This category includes “Substandard” loans, determined in accordance with regulatory guidelines, for which the accrual of interest has not been stopped. Assets so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. ● Substandard Non-accrual- This category includes loans that have all the characteristics of a “Substandard” loan with additional factors that make collection in full highly questionable and improbable. Such loans are placed on non-accrual status and may be dependent on collateral with a value that is difficult to determine. All loans are graded at their inception. Most commercial lending relationships that are $1.0 million or less are processed through an expedited underwriting process. Most commercial loans greater than $1.0 million are included in a portfolio review at least annually. Commercial loans greater than $0.35 million that have a grading of special mention or worse are reviewed on a quarterly basis. Interim reviews may take place if circumstances of the borrower warrant a more timely review. The following table is a summary of risk grades segregated by category of portfolio loans. March 31, 2020 includes purchase discounts and clearings in the pass rating. December 31, 2019 excludes purchase discounts and clearings. (dollars in thousands) : March 31, 2020 Special Substandard Pass Watch Mention Substandard Non-accrual Commercial $ 1,481,538 $ 150,303 $ 85,231 $ 42,727 $ 7,392 Commercial real estate 2,509,301 178,151 100,365 28,245 8,941 Real estate construction 415,302 28,808 3,222 699 282 Retail real estate 1,624,543 13,075 3,652 6,387 8,971 Retail other 48,273 — — 5 86 Total $ 6,078,957 $ 370,337 $ 192,470 $ 78,063 $ 25,672 December 31, 2019 Special Substandard Pass Watch Mention Substandard Non-accrual Commercial $ 1,458,416 $ 172,526 $ 66,337 $ 41,273 $ 9,096 Commercial real estate 2,477,398 186,963 105,487 26,204 9,178 Real estate construction 351,923 45,262 3,928 737 630 Retail real estate 1,661,691 9,125 5,355 7,001 8,935 Retail other 47,698 — — — 57 Total $ 5,997,126 $ 413,876 $ 181,107 $ 75,215 $ 27,896 Risk grades of portfolio loans, further sorted by origination year at March 31, 2020 is as follows (dollars in thousand) : Term Loans Amortized Cost Basis by Origination Year Revolving As of March 31, 2020 2020 2019 2018 2017 2016 Prior loans Total Commercial: Risk rating Pass $ 183,585 $ 217,732 $ 158,089 $ 136,995 $ 84,025 $ 129,623 $ 571,489 $ 1,481,538 Watch 11,686 29,396 17,424 10,367 4,617 12,958 63,855 150,303 Special Mention 12,010 5,723 1,918 7,316 7,148 15,166 35,950 85,231 Substandard 2,860 6,108 4,640 5,646 1,939 1,425 20,109 42,727 Substandard non-accrual — 3,245 1,871 541 997 738 — 7,392 Total commercial $ 210,141 $ 262,204 $ 183,942 $ 160,865 $ 98,726 $ 159,910 $ 691,403 $ 1,767,191 Commercial real estate: Risk rating Pass $ 154,317 $ 597,120 $ 485,314 $ 551,251 $ 262,300 $ 425,072 $ 33,927 $ 2,509,301 Watch 20,142 61,908 37,717 19,038 19,039 17,375 2,932 178,151 Special Mention 15,788 15,758 18,964 14,042 6,810 28,508 495 100,365 Substandard 2,802 12,855 3,741 6,211 1,884 637 115 28,245 Substandard non-accrual — 1,345 3,813 1,484 564 1,735 — 8,941 Total commercial real estate $ 193,049 $ 688,986 $ 549,549 $ 592,026 $ 290,597 $ 473,327 $ 37,469 $ 2,825,003 Real estate construction: Risk rating Pass $ 26,489 $ 204,437 $ 139,119 $ 20,465 $ 412 $ 1,534 $ 22,846 $ 415,302 Watch 10,936 12,936 2,582 2,140 214 28,808 Special Mention 2,367 703 — — 152 — — 3,222 Substandard — — 655 44 — — — 699 Substandard non-accrual — — 275 — — 7 — 282 Total real estate construction $ 39,792 $ 218,076 $ 142,631 $ 22,649 $ 778 $ 1,541 $ 22,846 $ 448,313 Retail real estate: Risk rating Pass $ 51,441 $ 201,517 $ 199,235 $ 204,376 $ 184,629 $ 381,085 $ 402,260 $ 1,624,543 Watch 296 3,599 1,893 441 1,034 736 5,076 13,075 Special Mention 108 — 180 — 2,001 1,363 — 3,652 Substandard — 1,285 447 537 761 2,904 453 6,387 Substandard non-accrual 100 209 863 486 254 5,541 1,518 8,971 Total retail real estate $ 51,945 $ 206,610 $ 202,618 $ 205,840 $ 188,679 $ 391,629 $ 409,307 $ 1,656,628 Retail other: Risk rating Pass $ 6,126 $ 13,896 $ 9,331 $ 4,942 $ 1,601 $ 1,419 $ 10,958 $ 48,273 Watch — — — — — — — — Special Mention — — — — — — — — Substandard — — — — — — 5 5 Substandard non-accrual 16 47 — 3 17 — 3 86 Total retail other $ 6,142 $ 13,943 $ 9,331 $ 4,945 $ 1,618 $ 1,419 $ 10,966 $ 48,364 An analysis of the amortized cost basis of portfolio loans that are past due and still accruing or on a non-accrual status is as follows (dollars in thousands) : March 31, 2020 Loans past due, still accruing Non-accrual 30-59 Days 60-89 Days 90+Days Loans Commercial $ 1,047 $ — $ — $ 7,392 Commercial real estate 690 387 159 8,941 Real estate construction — — — 282 Retail real estate 6,910 997 1,287 8,971 Retail other 107 12 94 86 Total $ 8,754 $ 1,396 $ 1,540 $ 25,672 December 31, 2019 Loans past due, still accruing Non-accrual 30-59 Days 60-89 Days 90+Days Loans Commercial $ 1,075 $ 1,014 $ 199 $ 9,096 Commercial real estate 2,653 3,121 584 9,178 Real estate construction 19 — — 630 Retail real estate 5,021 1,248 828 8,935 Retail other 52 68 — 57 Total $ 8,820 $ 5,451 $ 1,611 $ 27,896 The gross interest income that would have been recorded in the three months ended March 31, 2020 and 2019 if non-accrual loans and 90+ days past due loans had been current in accordance with their original terms was $0.5 million and $0.7 million, respectively. The amount of interest collected on those loans and recognized on a cash basis that was included in interest income was insignificant for the three months ended March 31, 2020 and 2019. A summary of troubled debt restructurings (“TDR”) loans is as follows (dollars in thousands) : March 31, December 31, 2020 2019 In compliance with modified terms $ 4,949 $ 5,005 30 — 89 days past due — — Included in non-performing loans 1,686 702 Total $ 6,635 $ 5,707 There were no loans newly classified as TDRs in compliance with modified terms during the three months ended March 31, 2020. Loans newly classified as a TDR in compliance with modified terms during the three months ended March 31, 2019 consisted of one commercial modification for short-term payment relief, with an amortized cost of $3.1 million. Commercial non-performing loans of $0.5 million and commercial real estate non-performing loans of $0.7 million were newly classified as TDRs included in non-performing loans for short-term payment relief during the three months ended March 31, 2020. The gross interest income that would have been recorded in the three months ended March 31, 2020 and 2019 if TDRs had performed in accordance with their original terms compared with their modified terms was insignificant. There were no TDRs that were entered into during the prior twelve months that were subsequently classified as non-performing and had payment defaults during the three months ended March 31, 2020 or 2019. At March 31, 2020, the Company had $1.3 million of residential real estate in the process of foreclosure. The following tables provide details of loans evaluated individually, segregated by category. With the adoption of CECL, the Company only evaluated loans with disparate risk characteristics on an individual basis. The unpaid contractual principal balance represents the customer outstanding balance excluding any partial charge-offs. The amortized cost represents customer balances net of any partial charge-offs recognized on the loan. The average amortized cost is calculated using the most recent four quarters (dollars in thousands) . March 31, 2020 Unpaid Amortized Contractual Cost Amortized Total Average Principal with No Cost Amortized Related Amortized Balance Allowance with Allowance Cost Allowance Cost Commercial $ 11,795 $ 3,751 $ 3,671 $ 7,422 $ 2,822 $ 11,493 Commercial real estate 11,992 9,111 1,206 10,317 642 15,226 Real estate construction 579 562 — 562 — 888 Retail real estate 7,642 6,597 474 7,071 474 12,767 Retail other — — — — — 34 Total $ 32,008 $ 20,021 $ 5,351 $ 25,372 $ 3,938 $ 40,408 December 31, 2019 Unpaid Amortized Contractual Cost Amortized Total Average Principal with No Cost Amortized Related Amortized Balance Allowance with Allowance Cost Allowance Cost Commercial $ 14,415 $ 4,727 $ 5,026 $ 9,753 $ 3,330 $ 13,774 Commercial real estate 14,487 9,883 2,039 11,922 1,049 16,678 Real estate construction 1,116 974 — 974 — 873 Retail real estate 15,581 13,898 474 14,372 474 14,003 Retail other 87 58 — 58 — 42 Total $ 45,686 $ 29,540 $ 7,539 $ 37,079 $ 4,853 $ 45,370 Management's evaluation as to the ultimate collectability of loans includes estimates regarding future cash flows from operations and the value of property, real and personal, pledged as collateral. These estimates are affected by changing economic conditions and the economic prospects of borrowers. Collateral dependent loans are loans in which repayment is expected to be provided solely by the underlying collateral and there are no other available and reliable sources of repayment. They are written down to the lower of cost or fair value of underlying collateral, less estimated costs to sell. As of March 31, 2020, there were $13.5 million of collateral dependent loans which are secured by real estate or business assets. Management estimates the allowance balance using relevant available information from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. The cumulative loss rate used as the basis for the estimate of credit losses is comprised of the Company’s historical loss experience from 2010-2019. As of March 31, 2020, the Company expects the markets in which it operates to experience a decline in economic conditions and an increase in the unemployment rate and level of delinquencies over the next 12 months. Management adjusted the historical loss experience for these expectations with an immediate reversion to historical loss rate beyond this forecast period. The following table details activity in the allowance. Allocation of a portion of the allowance to one category does not preclude its availability to absorb losses in other categories (dollars in thousands) : As of and for the Three Months Ended March 31, 2020 Commercial Real Estate Retail Real Commercial Real Estate Construction Estate Retail Other Total Beginning balance, prior to adoption of ASC 326 $ 18,291 $ 21,190 $ 3,204 $ 10,495 $ 568 $ 53,748 Adoption of ASC 326 715 9,306 2,954 3,292 566 16,833 Provision for credit losses 5,673 6,526 889 4,037 91 17,216 Charged-off (2,042) (1,099) — (708) (299) (4,148) Recoveries 88 44 146 338 119 735 Ending balance $ 22,725 $ 35,967 $ 7,193 $ 17,454 $ 1,045 $ 84,384 As of and for the Three Months Ended March 31, 2019 Commercial Real Estate Retail Real Commercial Real Estate Construction Estate Retail Other Total Beginning balance $ 17,829 $ 21,137 $ 2,723 $ 8,471 $ 488 $ 50,648 Provision for loan losses 1,793 (1,089) 2 1,357 48 2,111 Charged-off (1,807) (15) — (517) (130) (2,469) Recoveries 183 64 82 192 104 625 Ending balance $ 17,998 $ 20,097 $ 2,807 $ 9,503 $ 510 $ 50,915 The following table presents the allowance and amortized cost of portfolio loans by category (dollars in thousands) : As of March 31, 2020 Commercial Real Estate Retail Real Commercial Real Estate Construction Estate Retail Other Total Allowance Ending balance attributed to: Loans individually evaluated for impairment $ 2,822 $ 642 $ — $ 474 $ — $ 3,938 Loans collectively evaluated for impairment 19,903 35,325 7,193 16,980 1,045 80,446 Ending balance $ 22,725 $ 35,967 $ 7,193 $ 17,454 $ 1,045 $ 84,384 Loans: Loans individually evaluated for impairment $ 7,414 $ 8,452 $ 307 $ 6,618 $ — $ 22,791 Loans collectively evaluated for impairment 1,759,769 2,814,686 447,751 1,649,557 48,364 6,720,127 PCD loans evaluated for impairment 8 1,865 255 453 — 2,581 Ending balance $ 1,767,191 $ 2,825,003 $ 448,313 $ 1,656,628 $ 48,364 $ 6,745,499 As of December 31, 2019 Commercial Real Estate Retail Real Commercial Real Estate Construction Estate Retail Other Total Allowance Ending balance attributed to: Loans individually evaluated for impairment $ 3,330 $ 1,049 $ — $ 474 $ — $ 4,853 Loans collectively evaluated for impairment 14,961 20,141 3,204 10,021 568 48,895 Ending balance $ 18,291 $ 21,190 $ 3,204 $ 10,495 $ 568 $ 53,748 Loans: Loans individually evaluated for impairment $ 9,740 $ 10,018 $ 539 $ 13,676 $ 58 $ 34,031 Loans collectively evaluated for impairment 1,738,615 2,781,495 400,887 1,679,397 49,776 6,650,170 PCI loans evaluated for impairment 13 1,904 435 696 — 3,048 Ending balance $ 1,748,368 $ 2,793,417 $ 401,861 $ 1,693,769 $ 49,834 $ 6,687,249

Deposits

Deposits	3 Months Ended
Deposits	Mar. 31, 2020
Deposits
Deposits	Note 5: Deposits The composition of deposits is as follows (dollars in thousands) : March 31, 2020 December 31, 2019 Demand deposits, noninterest-bearing $ 1,910,673 $ 1,832,619 Interest-bearing transaction deposits 1,982,137 1,989,854 Saving deposits and money market deposits 2,598,410 2,545,073 Time deposits 1,482,013 1,534,850 Total $ 7,973,233 $ 7,902,396 The Company held brokered saving deposits and money market deposits of $13.8 million and $12.5 million at March 31, 2020 and December 31, 2019, respectively. The aggregate amount of time deposits with a minimum denomination of $100,000 was approximately $833.8 million and $854.1 million at March 31, 2020 and December 31, 2019, respectively. The aggregate amount of time deposits with a minimum denomination that meets or exceeds the Federal Deposit Insurance Corporation (“FDIC”) insurance limit of $250,000 was approximately $329.9 million and $297.4 million at March 31, 2020 and December 31, 2019, respectively. The Company held brokered time deposits of $5.2 million and $5.5 million at March 31, 2020 and December 31, 2019, respectively. As of March 31, 2020, the scheduled maturities of time deposits are as follows (dollars in thousands) : April 1, 2020 - March 31, 2021 $ 970,198 April 1, 2021 - March 31, 2022 300,817 April 1, 2022 - March 31, 2023 105,097 April 1, 2023 - March 31, 2024 76,896 April 1, 2024 - March 31, 2025 28,994 Thereafter 11 $ 1,482,013

Borrowings

Borrowings	3 Months Ended
Borrowings	Mar. 31, 2020
Borrowings
Borrowings	Note 6: Borrowings Securities sold under agreements to repurchase, which are classified as secured borrowings, generally mature daily. Securities sold under agreements to repurchase are reflected at the amount of cash received in connection with the transaction. The underlying securities are held by the Company’s safekeeping agent. The Company may be required to provide additional collateral based on fluctuations in the fair value of the underlying securities. Short-term borrowings include FHLB advances which mature in less than one year from date of origination. On January 29, 2019, the Company entered into an Amended and Restated Credit Agreement providing for a $60.0 million term loan (the “Term Loan”) with a maturity date of November 30, 2023. The Term Loan had an annual interest rate of one-month LIBOR plus a spread of 1.50% . The proceeds of the Term Loan were used to fund the cash consideration related to the acquisition of Banc Ed. The Company, at its option, repaid the balance of the Term Loan during the first quarter of 2020. The Amended and Restated Credit Agreement also retained the Company’s $20.0 million revolving facility with a maturity date of April 30, 2019. On April 19, 2019, the Company entered into an amendment to the Amended and Restated Credit Agreement to extend the maturity of its revolving loan facility to April 30, 2020. Subsequent to quarter end on April 24, 2020, the revolving loan facility maturity was extended one year to April 30, 2021 with an annual interest rate of one-month LIBOR plus a spread of 1.75% . The revolving facility incurs a non-usage fee based on the undrawn amount. At March 31, 2020 the Company had $20.0 million outstanding under the revolving facility. The Company had no outstanding balance under the revolving facility on December 31, 2019. Long-term debt is summarized as follows (dollars in thousands) : March 31, December 31, 2020 2019 Notes payable, FHLB, ranging in original maturity from 5 to 10 years , collateralized by FHLB deposits, residential and commercial real estate loans and FHLB stock. $ 35,595 $ 35,600 Term Loan — 48,000 Total long-term borrowings $ 35,595 $ 83,600 As of March 31, 2020, long-term debt from the FHLB consisted of variable-rate notes maturing through September 2024, with interest rates ranging from 0.05% to 3.04% . The weighted average rate on the long-term advances was 0.52% as of March 31, 2020. As of December 31, 2019, funds borrowed from the FHLB, listed above, consisted of variable-rate notes maturing through September 2024, with interest rates ranging from 1.25% to 3.04% . The weighted average rate on the long-term advances was 1.53% as of December 31, 2019. On May 25, 2017, the Company issued $40.0 million of 3.75% senior notes that mature on May 25, 2022. The senior notes are payable semi-annually on each May 25 and November 25, commencing on November 25, 2017. The senior notes are not subject to optional redemption by the Company. Additionally, on May 25, 2017, the Company issued $60.0 million of fixed-to-floating rate subordinated notes that mature on May 25, 2027. The subordinated notes, which qualify as Tier 2 capital for First Busey, bear interest at an annual rate of 4.75% for the first five years after issuance and thereafter bear interest at a floating rate equal to three-month LIBOR plus a spread of 2.919% , as calculated on each applicable determination date. The subordinated notes are payable semi-annually on each May 25 and November 25, commencing on November 25, 2017 during the five year fixed-term and thereafter on February 25, May 25, August 25 and November 25 of each year, commencing on August 25, 2022. The subordinated notes have an optional redemption in whole or in part on any interest payment date on or after May 25, 2022. The senior notes and subordinated notes are unsecured obligations of the Company. Unamortized debt issuance costs related to the senior notes and subordinated notes totaled $0.3 million and $0.7 million, respectively, at March 31, 2020. Unamortized debt issuance costs related to the senior notes and subordinated notes totaled $0.3 million and $0.8 million, respectively, at December 31, 2019.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
Earnings Per Common Share	Mar. 31, 2020
Earnings Per Common Share
Earnings Per Common Share	Note 7: Earnings Per Common Share Earnings per common share have been computed as follows (in thousands, except per share data) : Three Months Ended March 31, 2020 2019 Net income $ 15,364 $ 25,469 Shares: Weighted average common shares outstanding 54,662 53,277 Dilutive effect of outstanding options, warrants and restricted stock units as determined by the application of the treasury stock method 251 301 Weighted average common shares outstanding, as adjusted for diluted earnings per share calculation 54,913 53,578 Basic earnings per common share $ 0.28 $ 0.48 Diluted earnings per common share $ 0.28 $ 0.48 Basic earnings per share is computed by dividing net income for the period by the weighted average number of common shares outstanding, which include deferred stock units that are vested but not delivered. Diluted earnings per common share is computed using the treasury stock method and reflects the potential dilution that could occur if the Company’s outstanding stock options and warrants were exercised and restricted stock units were vested. At March 31, 2020, 204,277 outstanding restricted stock units, 39,965 outstanding stock options and 191,278 warrants were anti-dilutive and excluded from the calculation of common stock equivalents. At March 31, 2019, 172,571 outstanding restricted stock equivalents, 49,646 outstanding stock options and 191,278 warrants were anti-dilutive and excluded from the calculation of common stock equivalents.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
Accumulated Other Comprehensive Income (Loss)	Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss).
Accumulated Other Comprehensive Income (Loss).	Note 8: Accumulated Other Comprehensive Income (Loss) The following table represents changes in accumulated other comprehensive income (loss) by component, net of tax, for the periods below (dollars in thousands) : Three Months Ended March 31, 2020 2019 Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Unrealized gains (losses) on debt securities available for sale: Balance at beginning of period $ 21,192 $ (6,032) $ 15,160 $ (9,528) $ 2,716 $ (6,812) Unrealized holding gains (losses) on debt securities available for sale, net 30,086 (8,589) 21,497 6,799 (1,940) 4,859 Unrealized gains on debt securities transferred from held to maturity to available for sale — — — 4,780 (1,364) 3,416 Amounts reclassified from accumulated other comprehensive income, net (1,556) 448 (1,108) 184 (52) 132 Balance at end of period $ 49,722 $ (14,173) $ 35,549 $ 2,235 $ (640) $ 1,595 Unrealized gains (losses) on cash flow hedges: Balance at beginning of period (280) 80 (200) — — — Unrealized holding gains (losses) on cash flow hedges, net (3,129) 892 (2,237) — — — Amounts reclassified from accumulated other comprehensive income, net (15) 4 (11) — — — Balance at end of period $ (3,424) $ 976 $ (2,448) $ — $ — $ — Total accumulated other comprehensive income (loss) $ 46,298 $ (13,197) $ 33,101 $ 2,235 $ (640) $ 1,595

Share-based Compensation

Share-based Compensation	3 Months Ended
Share-based Compensation	Mar. 31, 2020
Share-based Compensation
Share-based Compensation	Note 9: Share-based Compensation The Company currently grants share-based compensation in the form of restricted stock units and deferred stock units. The Company grants restricted stock units to members of management periodically throughout the year. Each restricted stock unit is equivalent to one share of the Company’s common stock. These units have requisite service periods ranging from one to five years . The Company annually grants share-based awards in the form of deferred stock units, which are restricted stock units with a deferred settlement date, to its board of directors. Each deferred stock unit is equivalent to one share of the Company’s common stock. The deferred stock units vest over a 12 month period following the grant date or on the date of the next Annual Meeting of Stockholders, whichever is earlier. These units generally are subject to the same terms as restricted stock units under the Company’s 2010 Equity Plan or the First Community 2016 Equity Plan, except that, following vesting, settlement occurs within 30 days following the earlier of separation from the board or a change in control of the Company. Subsequent to vesting and prior to delivery, these units will continue to earn dividend equivalents. The Company also has outstanding stock options granted prior to 2011 and stock options assumed from acquisitions. A description of the 2010 Equity Incentive Plan, which was amended in 2015, can be found in the Company’s Proxy Statement for the 2015 Annual Meeting of Stockholders. A description of the First Community 2016 Equity Incentive Plan can be found in the Proxy Statement of First Community Financial Partners, Inc. for the 2016 Annual Meeting of Stockholders. As further described in the Company’s Proxy Statement for the 2020 Annual Meeting of Stockholders, dated April 9, 2020, the Company’s stockholders will consider adoption of the First Busey Corporation 2020 Equity Incentive Plan, which the Company’s board of directors approved on March 25, 2020, at the 2020 Annual Meeting. Stock Option Plan A summary of the status of and changes in the Company's stock option awards for the three months ended March 31, 2020 follows: Weighted- Weighted- Average Average Exercise Remaining Contractual Shares Price Term Outstanding at beginning of period 53,185 $ 22.00 Exercised (5,280) 23.26 Forfeited — — Expired (88) 17.05 Outstanding at end of period 47,817 $ 21.87 5.58 Exercisable at end of period 47,817 $ 21.87 5.58 The Company did not record any stock option compensation expense for the three months ended March 31, 2020. The Company recorded an insignificant amount of stock option compensation expense for the three months ended March 31, 2019. Restricted Stock Unit Plan A summary of the changes in the Company’s stock unit awards for the three months ended March 31, 2020, is as follows: Weighted- Director Weighted- Restricted Average Deferred Average Stock Grant Date Stock Grant Date Units Fair Value Units Fair Value Non-vested at beginning of period 778,317 $ 27.27 21,261 $ 23.18 Granted 3,808 26.26 — — Dividend equivalents earned 6,612 25.50 780 25.50 Vested (8,249) 29.50 — — Forfeited (9,559) 28.96 (597) 25.50 Non-vested at end of period 770,929 $ 27.21 21,444 $ 23.20 Outstanding at end of period 770,929 $ 27.21 91,278 $ 23.40 Recipients earn quarterly dividend equivalents on their respective units which entitle the recipients to additional units. Therefore, dividends earned each quarter compound based upon the updated unit balances. Upon vesting/delivery, shares are expected (though not required) to be issued from treasury. On February 5, 2020, under the terms of the 2010 Equity Incentive Plan, the Company granted 3,808 restricted stock units to a member of management. As the stock price on the grant date of February 5, 2020 was $26.26 , total compensation cost to be recognized is $0.1 million. This cost will be recognized over a period of three years . Subsequent to the requisite service period, the awards will become 100% vested. The Company recognized $1.1 million and $1.0 million of compensation expense related to both non-vested restricted stock units and deferred stock units for the three months ended March 31, 2020 and 2019, respectively. As of March 31, 2020, there was $10.9 million of total unrecognized compensation cost related to these non-vested stock awards. This cost is expected to be recognized over a period of 3.3 years. As of March 31, 2020, 552,157 shares remain available for issuance pursuant to the Company’s 2010 Equity Incentive Plan, 31,057 shares remain available for issuance pursuant to the Company’s Employee Stock Purchase Plan and 313,136 shares remain available for issuance pursuant to the First Community 2016 Equity Incentive Plan.

Outstanding Commitments and Con

Outstanding Commitments and Contingent Liabilities	3 Months Ended
Outstanding Commitments and Contingent Liabilities	Mar. 31, 2020
Outstanding Commitments and Contingent Liabilities
Outstanding Commitments and Contingent Liabilities	Note 10: Outstanding Commitments and Contingent Liabilities Legal Matters The Company is a party to legal actions which arise in the normal course of its business activities. In the opinion of management, the ultimate resolution of these matters is not expected to have a material effect on the financial position or the results of operations of the Company. Credit Commitments and Contingencies A summary of the contractual amount of the Company’s exposure to off-balance-sheet risk relating to the Company’s commitments to extend credit and standby letters of credit follows (dollars in thousands) : March 31, 2020 December 31, 2019 Financial instruments whose contract amounts represent credit risk: Commitments to extend credit $ 1,628,461 $ 1,649,565 Standby letters of credit 42,774 42,581 Upon adoption of CECL, the Company recorded a $5.5 million reserve for unfunded commitments. During the first quarter of 2020, the Company recorded additional provision of $1.0 million in other non-interest expense for a total unfunded reserve of $6.5 million as of March 31, 2020.

Regulatory Capital

Regulatory Capital	3 Months Ended
Regulatory Capital	Mar. 31, 2020
Regulatory Capital
Regulatory Capital	Note 11: Regulatory Capital The Company and Busey Bank are subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory—and possibly additional discretionary—actions by regulators that, if undertaken, could have a direct material effect on the Company's consolidated financial statements. The capital amounts and classification also are subject to qualitative judgments by the regulators about components, risk weightings and other factors. Banking regulations identify five capital categories for insured depository institutions: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized and critically undercapitalized. As of March 31, 2020 and December 31, 2019, all capital ratios of the Company and Busey Bank exceeded the well capitalized levels under the applicable regulatory capital adequacy guidelines. Management believes that no events or changes have occurred subsequent to March 31, 2020 that would change this designation. On March 27, 2020, the FDIC and other federal banking agencies published an interim final rule that provides those banking organizations adopting CECL during 2020 with the option to delay for two years the estimated impact of CECL on regulatory capital and to phase in the aggregate impact of the deferral on regulatory capital over a subsequent three year period. Under this interim final rule, because the Company has elected to use the deferral option, the regulatory capital impact of our transition adjustments recorded on January 1, 2020 from the adoption of CECL will be deferred for two years. In addition, 25 percent of the ongoing impact of CECL on our allowance for loan losses, retained earnings, and average total consolidated assets from January 1, 2020 through the end of the two-year deferral period, each as reported for regulatory capital purposes, will be added to the deferred transition amounts (“adjusted transition amounts”) and deferred for the two-year period. At the conclusion of the two-year period (January 1, 2022), the adjusted transition amounts will be phased-in for regulatory capital purposes at a rate of 25 percent per year, with the phased-in amounts included in regulatory capital at the beginning of each year. The following tables summarize the applicable holding company and bank regulatory capital requirements (dollars in thousands) : Minimum Minimum To Be Well Actual Capital Requirement Capitalized Amount Ratio Amount Ratio Amount Ratio As of March 31, 2020: Total Capital (to Risk Weighted Assets) Consolidated $ 1,046,689 13.85 % $ 604,488 8.00 % $ 755,610 10.00 % Busey Bank $ 1,012,447 13.42 % $ 603,538 8.00 % $ 754,422 10.00 % Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 921,827 12.20 % $ 453,366 6.00 % $ 604,488 8.00 % Busey Bank $ 947,583 12.56 % $ 452,653 6.00 % $ 603,538 8.00 % Common Equity Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 847,827 11.22 % $ 340,025 4.50 % $ 491,147 6.50 % Busey Bank $ 947,583 12.56 % $ 339,490 4.50 % $ 490,374 6.50 % Tier 1 Capital (to Average Assets) Consolidated $ 921,827 9.89 % $ 372,696 4.00 % N/A N/A Busey Bank $ 947,583 10.19 % $ 371,799 4.00 % $ 464,749 5.00 % Minimum Minimum To Be Well Actual Capital Requirement Capitalized Amount Ratio Amount Ratio Amount Ratio As of December 31, 2019: Total Capital (to Risk Weighted Assets) Consolidated $ 1,036,143 14.03 % $ 590,826 8.00 % $ 738,532 10.00 % Busey Bank $ 1,099,449 14.92 % $ 589,681 8.00 % $ 737,101 10.00 % Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 922,395 12.49 % $ 443,120 6.00 % $ 590,826 8.00 % Busey Bank $ 1,045,701 14.19 % $ 442,261 6.00 % $ 589,681 8.00 % Common Equity Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 848,395 11.49 % $ 332,340 4.50 % $ 480,046 6.50 % Busey Bank $ 1,045,701 14.19 % $ 331,696 4.50 % $ 479,116 6.50 % Tier 1 Capital (to Average Assets) Consolidated $ 922,395 9.88 % $ 373,360 4.00 % N/A N/A Busey Bank $ 1,045,701 11.19 % $ 373,639 4.00 % $ 467,049 5.00 % In July 2013, the U.S. federal banking authorities approved the Basel III Rule for strengthening international capital standards. The Basel III Rule introduced a capital conservation buffer, composed entirely of Common Equity Tier 1 Capital (“CET1”), which is added to the minimum risk-weighted asset ratios. The capital conservation buffer is not a minimum capital requirement; however, banking institutions with a ratio of CET1 to risk-weighted assets below the capital conservation buffer will face constraints on dividends, equity repurchases and discretionary bonus payments based on the amount of the shortfall. In order to refrain from restrictions on dividends, equity repurchases and discretionary bonus payments, banking institutions must maintain minimum ratios of (i) CET1 to risk-weighted assets of at least 7.00%, (ii) Tier 1 capital to risk-weighted assets of at least 8.50%, and (iii) Total capital to risk-weighted assets of at least 10.50%.

Operating Segments and Related

Operating Segments and Related Information	3 Months Ended
Operating Segments and Related Information	Mar. 31, 2020
Operating Segments and Related Information
Operating Segments and Related Information	Note 12: Operating Segments and Related Information The Company has three reportable operating segments: Banking, Remittance Processing and Wealth Management. The Banking operating segment provides a full range of banking services to individual and corporate customers through its banking center network in Illinois, the St. Louis, Missouri metropolitan area, southwest Florida and through its banking center in Indianapolis, Indiana. The Remittance Processing operating segment provides for online bill payments, lockbox and walk-in payments. The Wealth Management operating segment provides a full range of asset management, investment and fiduciary services to individuals, businesses and foundations, tax preparation, philanthropic advisory services and farm and brokerage services. The Company’s three operating segments are strategic business units that are separately managed as they offer different products and services and have different marketing strategies. The “other” category consists of the Parent Company and the elimination of intercompany transactions. The segment financial information provided below has been derived from information used by management to monitor and manage the financial performance of the Company. The accounting policies of the three segments are the same as those described in the summary of significant accounting policies in the “Note 1. Significant Accounting Policies” to Form 10-K. The Company accounts for intersegment revenue and transfers at current market value. Following is a summary of selected financial information for the Company’s operating segments (dollars in thousands) : Goodwill Total Assets March 31, 2020 December 31, 2019 March 31, 2020 December 31, 2019 Banking $ 288,436 $ 288,436 $ 9,654,171 $ 9,632,368 Remittance Processing 8,992 8,992 44,744 44,209 Wealth Management 14,108 14,108 36,204 32,760 Other — — (13,714) (13,608) Totals $ 311,536 $ 311,536 $ 9,721,405 $ 9,695,729 Three Months Ended March 31, 2020 2019 Net interest income: Banking $ 71,573 $ 70,638 Remittance Processing 19 18 Wealth Management — — Other (2,159) (2,273) Total net interest income $ 69,433 $ 68,383 Non-interest income: Banking $ 13,168 $ 12,783 Remittance Processing 4,069 4,181 Wealth Management 11,709 9,133 Other (1,429) (152) Total non-interest income $ 27,517 $ 25,945 Non-interest expense: Banking $ 48,515 $ 45,171 Remittance Processing 2,903 2,764 Wealth Management 6,974 5,564 Other 2,122 3,664 Total non-interest expense $ 60,514 $ 57,163 Income before income taxes: Banking $ 19,010 $ 36,139 Remittance Processing 1,185 1,435 Wealth Management 4,735 3,569 Other (5,710) (6,089) Total income before income taxes $ 19,220 $ 35,054 Net income: Banking $ 14,924 $ 26,665 Remittance Processing 860 1,025 Wealth Management 3,599 2,641 Other (4,019) (4,862) Total net income $ 15,364 $ 25,469

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
Derivative Financial Instruments	Mar. 31, 2020
Derivative Financial Instruments
Derivative Financial Instruments	Note 13: Derivative Financial Instruments The Company utilizes interest rate swap agreements as part of its asset liability management strategy to help manage its interest rate risk position. Additionally, the Company enters into derivative financial instruments, including interest rate lock commitments issued to residential loan customers for loans that will be held for sale, forward sales commitments to sell residential mortgage loans to investors and interest rate swaps with customers and other third parties. See “Note 14: Fair Value Measurements” for further discussion of the fair value measurement of such derivatives. Interest Rate Swaps Designated as Cash Flow Hedges: Starting in the third quarter of 2019, the Company entered into derivative instruments designated as cash flow hedges. For derivative instruments that are designated and qualify as a cash flow hedge, the change in fair value of the derivative instrument is reported as a component of other comprehensive income and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. Change in fair value of components excluded from the assessment of effectiveness are recognized in current earnings. Interest rate swaps with notional amounts totaling $70.0 million as of March 31, 2020 and December 31, 2019 were designated as cash flow hedges to hedge the risk of variability in cash flows (future interest payments) attributable to changes in the contractually specified 3 month LIBOR benchmark interest rate on the Company’s junior subordinated debt owed to unconsolidated trusts and were determined to be highly effective during the period. The gross aggregate fair value of the swaps of $3.4 million and $0.3 million is recorded in other liabilities in the unaudited consolidated financial statements at March 31, 2020 and December 31, 2019, respectively, with changes in fair value recorded net of tax in other comprehensive income (loss). The Company expects the hedges to remain highly effective during the remaining terms of the swaps. A summary of the interest-rate swaps designated as cash flow hedges is presented below (dollars in thousands) : March 31, 2020 December 31, 2019 Notional amount $ 70,000 $ 70,000 Weighted average fixed pay rates 1.80 % 1.80 % Weighted average variable 3 month LIBOR receive rates 0.77 % 1.90 % Weighted average maturity 3.61 yrs 3.86 yrs Unrealized gains (losses), net of tax $ (2,448) $ (200) Interest income (expense) recorded on these swap transactions were insignificant during the three months ended March 31, 2020. The Company expects $0.2 million of the unrealized loss to be reclassified from Other Comprehensive Income (Loss) (“OCI”) to interest expense during the next 12 months. This reclassified amount could differ from amounts actually recognized due to changes in interest rates, hedge de-designations and the addition of other hedges subsequent to March 31, 2020. The following table presents the net gains (losses) recorded in accumulated other comprehensive income and the unaudited Consolidated Statements of Income relating to cash flow derivative instruments for the period presented (dollars in thousands) : Three Months Ended March 31, 2020 Amount of (gain) loss recognized in OCI Amount of (gain) loss reclassified from OCI to interest income Interest rate contracts $ 2,237 $ (11) The Company pledged $3.3 million and $0.3 million in cash to secure its obligation under these contracts at March 31, 2020 and December 31, 2019, respectively. Interest Rate Lock Commitments . At March 31, 2020 and December 31, 2019, the Company had issued $268.7 million and $69.1 million, respectively, of unexpired interest rate lock commitments to loan customers. Such interest rate lock commitments that meet the definition of derivative financial instruments under ASC Topic 815, Derivatives and Hedging , are carried at their fair values in other assets or other liabilities in the unaudited consolidated financial statements, with changes in the fair values of the corresponding derivative financial assets or liabilities recorded as either a charge or credit to current earnings during the period in which the changes occurred. Forward Sales Commitments . At March 31, 2020 and December 31, 2019, the Company had issued $353.6 million and $135.3 million, respectively, of unexpired forward sales commitments to mortgage loan investors. Typically, the Company economically hedges mortgage loans held for sale and interest rate lock commitments issued to its residential loan customers related to loans that will be held for sale by obtaining corresponding best-efforts forward sales commitments with an investor to sell the loans at an agreed-upon price at the time the interest rate locks are issued to the customers. Forward sales commitments that meet the definition of derivative financial instruments under ASC Topic 815, Derivatives and Hedging , are carried at their fair values in other assets or other liabilities in the unaudited consolidated financial statements. While such forward sales commitments generally served as an economic hedge to the mortgage loans held for sale and interest rate lock commitments, the Company did not designate them for hedge accounting treatment. Changes in fair value of the corresponding derivative financial asset or liability were recorded as either a charge or credit to current earnings during the period in which the changes occurred. The fair values of derivative assets and liabilities related to interest rate lock commitments and forward sales commitments recorded in the unaudited Consolidated Balance Sheets are summarized as follows (dollars in thousands) : March 31, 2020 December 31, 2019 Fair value recorded in other assets $ 5,146 $ 1,046 Fair value recorded in other liabilities 7,344 2,187 The gross gains and losses on these derivative assets and liabilities related to interest rate lock commitments and forward sales commitments recorded in non-interest income and expense in the unaudited Consolidated Statements of Income are summarized as follows (dollars in thousands) : Three Months Ended March 31, 2020 2019 Gross gains $ 6,670 $ 1,078 Gross (losses) (7,344) (1,118) Net gains (losses) $ (674) $ (40) The impact of the net gains or losses on derivative financial instruments related to interest rate lock commitments issued to residential loan customers for loans that will be held for sale and forward sales commitments to sell residential mortgage loans to loan investors are almost entirely offset by a corresponding change in the fair value of loans held for sale. Interest Rate Swaps Not Designated as Hedges. The Company may offer derivative contracts to its customers in connection with their risk management needs. The Company manages the risk associated with these contracts by entering into an equal and offsetting derivative with a third-party dealer. With notional values of $650.2 million and $580.8 million at March 31, 2020 and December 31, 2019, respectively, these contracts support variable rate, commercial loan relationships totaling $325.1 million and $290.4 million, respectively. These derivatives generally worked together as an economic interest rate hedge, but the Company did not designate them for hedge accounting treatment. Consequently, changes in fair value of the corresponding derivative financial asset or liability were recorded as either a charge or credit to current earnings during the period in which the changes occurred. The fair values of derivative assets and liabilities related to derivatives for customers for interest rate swaps recorded in the unaudited Consolidated Balance Sheets are summarized as follows (dollars in thousands) : March 31, 2020 December 31, 2019 Fair value recorded in other assets $ 35,832 $ 12,354 Fair value recorded in other liabilities 35,832 12,354 The gross gains and losses on these derivative assets and liabilities recorded in non-interest income and non-interest expense in the unaudited Consolidated Statements of Income are summarized as follows (dollars in thousands) : Three Months Ended March 31, 2020 2019 Gross gains $ 23,478 $ 3,713 Gross losses (23,478) (3,713) Net gains (losses) $ — $ — The Company pledged $36.5 million and $18.1 million in cash to secure its obligation under these contracts at March 31, 2020 and December 31, 2019, respectively.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
Fair Value Measurements	Mar. 31, 2020
Fair Value Measurements
Fair Value Measurements	Note 14: Fair Value Measurements The fair value of an asset or liability is the price that would be received by selling that asset or paid in transferring that liability (exit price) in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. ASC Topic 820, Fair Value Measurement , establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows: Level 1 Inputs - Unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. Level 2 Inputs - Inputs other than quoted prices included in level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means. Level 3 Inputs - Unobservable inputs for determining the fair values of assets or liabilities that reflect the Company’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities. A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. These valuation methodologies were applied to those Company assets and liabilities that are carried at fair value. In general, fair value is based upon quoted market prices, when available. If such quoted market prices are not available, fair values are measured utilizing independent valuation techniques of identical or similar securities for which significant assumptions are derived primarily from or corroborated by observable data. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect, among other things, counterparty credit quality and the company's creditworthiness as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. While management believes the Company's valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Debt securities Available for Sale. Debt securities classified as available for sale are reported at fair value utilizing level 2 measurements. The Company obtains fair value measurements from an independent pricing service. The independent pricing service utilizes evaluated pricing models that vary by asset class and incorporate available trade, bid and other market information. Because many fixed income securities do not trade on a daily basis, the independent pricing service applies available information, focusing on observable market data such as benchmark curves, benchmarking of like securities, sector groupings, and matrix pricing, to prepare evaluations. The independent pricing service uses model processes, such as the Option Adjusted Spread model, to assess interest rate impact and develop prepayment scenarios. The models and processes take into account market conventions. For each asset class, a team of evaluators gathers information from market sources and integrates relevant credit information, perceived market movements and sector news into the evaluated pricing applications and models. The market inputs that the independent pricing service normally seeks for evaluations of securities, listed in approximate order of priority, include: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data including market research publications. The independent pricing service also monitors market indicators, industry and economic events. For certain security types, additional inputs may be used or some of the market inputs may not be applicable. Evaluators may prioritize inputs differently on any given day for any security based on market conditions, and not all inputs listed are available for use in the evaluation process for each security evaluation on a given day. Because the data utilized was observable, the securities have been classified as level 2. Equity Securities. Equity securities are reported at fair value utilizing level 1 or level 2 measurements. For mutual funds, unadjusted quoted prices in active markets for identical assets are utilized to determine fair value at the measurement date and have been classified as level 1. For stock, quoted prices for identical or similar assets in markets that are not active are utilized and classified as level 2. Loans Held for Sale. Loans held for sale are reported at fair value utilizing level 2 measurements. The fair value of the mortgage loans held for sale are measured using observable quoted market or contract prices or market price equivalents and are classified as level 2. Derivative Assets and Derivative Liabilities . Derivative assets and derivative liabilities are reported at fair value utilizing level 2 measurements. The fair value of derivative assets and liabilities is determined based on prices that are obtained from a third-party which uses observable market inputs. Derivative assets and liabilities are classified as level 2. The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (dollars in thousands) : Level 1 Level 2 Level 3 Total March 31, 2020 Inputs Inputs Inputs Fair Value Debt securities available for sale U.S. Treasury securities $ — $ 45,394 $ — $ 45,394 Obligations of U.S. government corporations and agencies — 90,574 — 90,574 Obligations of states and political subdivisions — 284,747 — 284,747 Commercial mortgage-backed securities — 245,421 — 245,421 Residential mortgage-backed securities — 1,000,857 — 1,000,857 Corporate debt securities — 98,952 — 98,952 Equity securities — 4,936 — 4,936 Loans held for sale — 89,943 — 89,943 Derivative assets — 40,978 — 40,978 Derivative liabilities — 46,600 — 46,600 Level 1 Level 2 Level 3 Total December 31, 2019 Inputs Inputs Inputs Fair Value Debt securities available for sale U.S. Treasury securities $ — $ 51,737 $ — $ 51,737 Obligations of U.S. government corporations and agencies — 163,000 — 163,000 Obligations of states and political subdivisions — 268,291 — 268,291 Commercial mortgage-backed securities — 139,287 — 139,287 Residential mortgage-backed securities — 921,966 — 921,966 Corporate debt securities — 103,976 — 103,976 Equity securities — 5,952 — 5,952 Loans held for sale — 68,699 — 68,699 Derivative assets — 13,400 — 13,400 Derivative liabilities — 14,821 — 14,821 Certain financial assets and financial liabilities are measured at fair value on a non-recurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). Loans Evaluated Individually . The Company does not record portfolio loans at fair value on a recurring basis. However, periodically, a loan is evaluated individually and is reported at the fair value of the underlying collateral, less estimated costs to sell, if repayment is expected solely from the collateral. If the collateral value is not sufficient, a specific reserve is recorded. Collateral values are estimated using a combination of observable inputs, including recent appraisals, and unobservable inputs based on customized discounting criteria. Due to the significance of the unobservable inputs, the fair value of individually evaluated collateral dependent loans have been classified as level 3. OREO. Non-financial assets and non-financial liabilities measured at fair value include OREO (upon initial recognition or subsequent impairment). OREO properties are measured using a combination of observable inputs, including recent appraisals, and unobservable inputs. Due to the significance of the unobservable inputs, all OREO fair values have been classified as level 3. Bank Property Held for Sale. Bank property held for sale represents certain banking center office buildings which the Company has closed and consolidated with other existing banking centers. Bank property held for sale is measured at the lower of amortized cost or fair value less estimated costs to sell. The fair values were based upon discounted appraisals or real estate listing price. Due to the significance of the unobservable inputs, all bank property held for sale fair values have been classified as level 3. The following table summarizes assets and liabilities measured at fair value on a non-recurring basis, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (dollars in thousands) : Level 1 Level 2 Level 3 Total Inputs Inputs Inputs Fair Value March 31, 2020 Loans evaluated individually $ — $ — $ 1,413 $ 1,413 OREO — — 55 55 Bank property held for sale — — 3,413 3,413 December 31, 2019 Loans evaluated individually $ — $ — $ 2,686 $ 2,686 OREO — — 55 55 Bank property held for sale — — 4,004 4,004 The following table presents additional quantitative information about assets measured at fair value on a non-recurring basis for which the Company has utilized level 3 inputs to determine fair value (dollars in thousands) : Quantitative Information about Level 3 Fair Value Measurements Fair Value Valuation Unobservable Range Estimate Techniques Input (Weighted Average) March 31, 2020 Loans evaluated individually $ 1,413 Appraisal of collateral Appraisal adjustments -0.3% to -100% (-69.6)% OREO 55 Appraisal of collateral Appraisal adjustments -25.0% to -100% (-65.0)% Bank property held for sale 3,413 Appraisal of collateral or real estate listing price Appraisal adjustments -6.2% to -64.9% (-27.3)% December 31, 2019 Loans evaluated individually $ 2,686 Appraisal of collateral Appraisal adjustments -2.9% to -100% (-57.8)% OREO 55 Appraisal of collateral Appraisal adjustments -25.0% to -100% (-65.0)% Bank property held for sale 4,004 Appraisal of collateral or real estate listing price Appraisal adjustments -6.2% to -71.3% (-40.7)% The estimated fair values of financial instruments that are reported at amortized cost in the Company’s unaudited Consolidated Balance Sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows (dollars in thousands) : March 31, 2020 December 31, 2019 Carrying Fair Carrying Fair Amount Value Amount Value Financial assets: Level 1 inputs: Cash and cash equivalents $ 342,848 $ 342,848 $ 529,288 $ 529,288 Level 2 inputs: Accrued interest receivable 27,310 27,310 27,109 27,109 Level 3 inputs: Portfolio loans, net 6,661,115 6,687,117 6,633,501 6,648,560 Mortgage servicing rights 11,776 13,968 12,326 18,193 Other servicing rights 1,070 1,632 1,071 1,740 Financial liabilities: Level 2 inputs: Time deposits $ 1,482,013 $ 1,490,835 $ 1,534,850 $ 1,538,597 Securities sold under agreements to repurchase 167,250 167,250 205,491 205,491 Short-term borrowings 21,358 21,364 8,551 8,552 Long-term debt 35,595 35,811 83,600 83,614 Junior subordinated debt owed to unconsolidated trusts 71,347 72,749 71,308 74,153 Accrued interest payable 5,609 5,609 5,000 5,000 Level 3 inputs: Senior notes, net of unamortized issuance costs 39,708 40,441 39,674 40,099 Subordinated notes, net of unamortized issuance costs 59,273 60,950 59,248 61,514

Leases

Leases	3 Months Ended
Leases	Mar. 31, 2020
Leases
Leases	Note 15: Leases The Company has operating leases consisting primarily of equipment leases and real estate leases. The Company leases real estate property for banking centers, ATM locations, and office space with terms extending through 2032. As of March 31, 2020, the Company reported $9.1 million of right-of-use asset and $9.2 million lease liability in its unaudited Consolidated Balance Sheets. The following tables represents lease costs and other lease information for the periods presented (dollars in thousands) : Three Months Ended March 31, Lease Costs 2020 2019 Operating lease costs $ 620 $ 533 Variable lease costs 171 111 Short-term lease costs 15 15 Sublease income - - Net lease cost $ 806 $ 659 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating lease cash flows – Fixed payments $ 611 $ 513 Operating lease cash flows – Liability reduction 530 463 Right of use assets obtained during the period in exchange for operating lease liabilities 128 — Weighted average lease term (in years) 6.51 8.33 Weighted average discount rate 3.05% 3.11% At March 31, 2020, the Company was obligated under noncancelable operating leases for office space and other commitments. Rent expense under operating leases, included in net occupancy and equipment expense, was $0.8 million and $0.7 million for the three months ended March 31, 2020 and 2019, respectively. Rent commitments were as follows (dollars in thousands) : Three Months Ended March 31, 2020 Remainder of 2020 $ 1,830 2021 1,814 2022 1,411 2023 1,254 2024 1,022 Thereafter 2,876 Amounts representing interest (1,057) Present value of net future minimum lease payments $ 9,150

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	3 Months Ended
Significant Accounting Policies (Policies)	Mar. 31, 2020
Significant Accounting Policies
Impacts of COVID-19	Impacts of COVID-19 First Busey is positioned to execute its mission as an essential community resource during these challenging times. The coronavirus disease 2019 (“COVID-19”) is not only impacting health and safety around the world, it is causing significant economic disruption for both individuals and businesses, making the Company’s promise of support even more important to customers. In the face of the challenges and risks posed by COVID-19, the Company remains resolute in its focus on protecting the strength and flexibility of its balance sheet. The progression of the COVID-19 pandemic in the United States began to negatively impact the Company’s results of operations during the quarter ended March 31, 2020. Going forward, COVID-19 can be expected to have a complex and significant adverse impact on the economy, the banking industry and First Busey in future fiscal periods, all subject to a high degree of uncertainty as it relates to both timing and severity. Primary areas of impact in the future for First Busey may include margin compression, increased provision expense, a deterioration in asset quality and decreased wealth management fees and fees for customer services.
Subsequent Events	Subsequent Events The Company has evaluated subsequent events for potential recognition and/or disclosure through the date the unaudited consolidated financial statements included in this Quarterly Report on Form 10-Q were issued. There were no significant subsequent events for the quarter ended March 31, 2020 through the issuance date of these unaudited consolidated financial statements that warranted adjustment to or disclosure in the unaudited consolidated financial statements.
Use of Estimates	Use of Estimates In preparing the accompanying unaudited consolidated financial statements in conformity with GAAP, the Company’s management is required to make estimates and assumptions that affect the amounts reported in the financial statements and the disclosures provided. Actual results could differ from those estimates. Material estimates which are particularly susceptible to significant change in the near term relate to the fair value of investment securities, fair value of assets acquired and liabilities assumed in business combinations, goodwill, income taxes and the determination of the allowance.
Impact of recently adopted accounting standards	Impact of recently adopted accounting standards On January 1, 2020, First Busey adopted Accounting Standards Update (“ASU”) 2016-13 Financial Instruments – Credit Losses (“Topic 326”): Measurement of Credit Losses on Financial Instruments , as amended, which replaces the incurred loss methodology with an expected loss methodology that is referred to as the current expected credit loss (“CECL”) methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. It also applies to off-balance-sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with Topic 842 on leases. In addition, Accounting Standards Codification (“ASC”) 326 made changes to the accounting for available-for-sale debt securities. One such change is to require credit losses to be presented as an allowance rather than as a write-down on available-for-sale debt securities management does not intend to sell or believes that it is more likely than not they will be required to sell. First Busey adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Results for reporting periods beginning after January 1, 2020 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP which includes a change in terminology from Allowance/Provision for Loan Losses to Allowance/Provision for Credit Losses. First Busey recorded a net decrease to retained earnings of $15.9 million as of January 1, 2020 for the cumulative effect of adopting ASC 326. This transition adjustment included $12.0 million in allowance for credit losses on loans and $3.9 million in reserve for off-balance-sheet credit exposures. First Busey adopted ASC 326 using the prospective transition approach for financial assets purchased with credit deterioration (“PCD”) that were previously classified as purchased credit impaired (“PCI”) and accounted for under ASC 310-30. In accordance with the standard, management did not reassess whether PCI assets met the criteria of PCD assets as of the date of adoption. In accordance with ASC 326, the amortized cost basis of PCD assets were adjusted to reflect an allowance for credit losses for any remaining credit discount. Subsequent changes in expected cash flows will be adjusted through the allowance for credit losses. The noncredit discount will be accreted into interest income at the effective interest rate as of January 1, 2020.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	3 Months Ended
Significant Accounting Policies (Tables)	Mar. 31, 2020
Significant Accounting Policies
Impact of ASC Topic 326	The following table illustrates the impact of ASC 326 (dollars in thousands) : January 1, 2020 Pre-tax Post ASC 326 Pre-ASC 326 impact of ASC 326 Adoption Adoption Adoption Assets: Allowance Commercial $ 19,006 $ 18,291 $ 715 Commercial real estate 30,496 21,190 9,306 Real estate construction 6,158 3,204 2,954 Retail real estate 13,787 10,495 3,292 Retail other 1,134 568 566 Total allowance for credit losses $ 70,581 $ 53,748 $ 16,833 Liabilities: Reserve for off-balance-sheet credit exposures $ 5,492 — 5,492

Acquisitions (Tables)

Acquisitions (Tables) - Banc Ed	3 Months Ended
Acquisitions (Tables) - Banc Ed	Mar. 31, 2020
Schedule of fair value estimates of assets acquired and liabilities assumed	The following table presents the estimated fair value of Banc Ed’s assets acquired and liabilities assumed as of January 31, 2019 (dollars in thousands) : Fair Value Assets acquired: Cash and cash equivalents $ 42,013 Securities 692,716 Loans held for sale 2,157 Portfolio loans 873,336 Premises and equipment 32,156 Other intangible assets 32,617 Mortgage servicing rights 6,946 Other assets 57,332 Total assets acquired 1,739,273 Liabilities assumed: Deposits 1,439,203 Other borrowings 63,439 Other liabilities 20,153 Total liabilities assumed 1,522,795 Net assets acquired $ 216,478 Consideration paid: Cash $ 91,400 Common stock 166,515 Total consideration paid $ 257,915 Goodwill $ 41,437
Schedule of unaudited pro forma results of operations for the acquisition	Pro Forma Three Months Ended March 31, 2019 Total revenues (net interest income plus non-interest income) $ 100,652 Net income 27,390 Diluted earnings per common share 0.49

Securities (Tables)

Securities (Tables)	3 Months Ended
Securities (Tables)	Mar. 31, 2020
Securities
Schedule of amortized cost, unrealized gains and losses and fair values of securities classified available for sale and held to maturity	The table below provides the amortized cost, unrealized gains and losses and fair values of debt securities summarized by major category (dollars in thousands) : Gross Gross Allowance Amortized Unrealized Unrealized for Credit Fair March 31, 2020: Cost Gains Losses Losses Value Debt securities available for sale U.S. Treasury securities $ 44,545 $ 849 $ — $ — $ 45,394 Obligations of U.S. government corporations and agencies 87,787 2,829 (42) — 90,574 Obligations of states and political subdivisions 278,741 6,359 (353) — 284,747 Commercial mortgage-backed securities 239,284 6,139 (2) — 245,421 Residential mortgage-backed securities 966,805 34,071 (19) — 1,000,857 Corporate debt securities 99,061 528 (637) — 98,952 Total $ 1,716,223 $ 50,775 $ (1,053) $ — $ 1,765,945 Gross Gross Amortized Unrealized Unrealized Fair December 31, 2019: Cost Gains Losses Value Debt securities available for sale U.S. Treasury securities $ 51,472 $ 265 $ — $ 51,737 Obligations of U.S. government corporations and agencies 160,364 2,684 (48) 163,000 Obligations of states and political subdivisions 262,492 5,810 (11) 268,291 Commercial mortgage-backed securities 137,733 1,700 (146) 139,287 Residential mortgage-backed securities 912,308 10,282 (624) 921,966 Corporate debt securities 102,696 1,280 — 103,976 Total $ 1,627,065 $ 22,021 $ (829) $ 1,648,257
Schedule of amortized cost and fair value of debt securities available for sale and held to maturity by contractual maturity	The amortized cost and fair value of debt securities, by contractual maturity or pre-refunded date, are shown below. Mortgages underlying mortgage-backed securities may be called or prepaid; therefore, actual maturities could differ from the contractual maturities. All mortgage-backed securities were issued by U.S. government agencies and corporations (dollars in thousands) . Debt securities available for sale Amortized Fair March 31, 2020: Cost Value Due in one year or less $ 142,273 $ 142,758 Due after one year through five years 275,344 282,349 Due after five years through ten years 244,765 252,843 Due after ten years 1,053,841 1,087,995 Total $ 1,716,223 $ 1,765,945
Schedule of realized gains and losses related to sales of securities	Realized gains and losses related to sales and calls of debt securities available for sale are summarized as follows (dollars in thousands) : Three Months Ended March 31, 2020 2019 Gross security gains $ 1,561 $ — Gross security (losses) (5) (183) Net gains (losses) on sales of securities (1) $ 1,556 $ (183) (1) Net (losses) gains on sales of securities reported on the unaudited Consolidated Statements of Income includes sale of equity securities, excluded in this table.
Schedule of securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous loss position	The following information pertains to debt securities with gross unrealized losses, aggregated by investment category and the length of time that individual securities have been in a continuous loss position (dollars in thousands): Less than 12 months, gross 12 months or more, gross Total, gross Fair Unrealized Fair Unrealized Fair Unrealized March 31, 2020: Value Losses Value Losses Value Losses Debt securities available for sale U.S. Treasury securities $ — $ — $ — $ — $ — $ — Obligations of U.S. government corporations and agencies 6,006 (42) — — 6,006 (42) Obligations of states and political subdivisions 15,445 (353) — — 15,445 (353) Commercial mortgage-backed securities 8,522 (2) — — 8,522 (2) Residential mortgage-backed securities 626 (5) 1,417 (14) 2,043 (19) Corporate debt securities 41,117 (637) — — 41,117 (637) Total temporarily impaired securities $ 71,716 $ (1,039) $ 1,417 $ (14) $ 73,133 $ (1,053) Less than 12 months, gross 12 months or more, gross Total, gross Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2019: Value Losses Value Losses Value Losses Debt securities available for sale U.S. Treasury securities $ — $ — $ — $ — $ — $ — Obligations of U.S. government corporations and agencies 6,362 (48) — — 6,362 (48) Obligations of states and political subdivisions (1) 4,981 (11) 1,548 — 6,529 (11) Commercial mortgage-backed securities 33,322 (144) 2,044 (2) 35,366 (146) Residential mortgage-backed securities 78,326 (245) 50,259 (379) 128,585 (624) Corporate debt securities — — — — — — Total temporarily impaired securities $ 122,991 $ (448) $ 53,851 $ (381) $ 176,842 $ (829) (1) Unrealized losses for 12 months or more, gross, was less than one thousand dollars.

Portfolio loans (Tables)

Portfolio loans (Tables)	3 Months Ended
Portfolio loans (Tables)	Mar. 31, 2020
Portfolio loans
Distribution of portfolio loans	The distribution of portfolio loans is as follows (dollars in thousands) : March 31, 2020 December 31, 2019 Commercial $ 1,767,191 $ 1,748,368 Commercial real estate 2,825,003 2,793,417 Real estate construction 448,313 401,861 Retail real estate 1,656,628 1,693,769 Retail other 48,364 49,834 Portfolio loans $ 6,745,499 $ 6,687,249 Allowance (84,384) (53,748) Portfolio loans, net $ 6,661,115 $ 6,633,501
Summary of risk grades segregated by category of portfolio loans (excluding accretable purchase accounting adjustments and clearings)	The following table is a summary of risk grades segregated by category of portfolio loans. March 31, 2020 includes purchase discounts and clearings in the pass rating. December 31, 2019 excludes purchase discounts and clearings. (dollars in thousands) : March 31, 2020 Special Substandard Pass Watch Mention Substandard Non-accrual Commercial $ 1,481,538 $ 150,303 $ 85,231 $ 42,727 $ 7,392 Commercial real estate 2,509,301 178,151 100,365 28,245 8,941 Real estate construction 415,302 28,808 3,222 699 282 Retail real estate 1,624,543 13,075 3,652 6,387 8,971 Retail other 48,273 — — 5 86 Total $ 6,078,957 $ 370,337 $ 192,470 $ 78,063 $ 25,672 December 31, 2019 Special Substandard Pass Watch Mention Substandard Non-accrual Commercial $ 1,458,416 $ 172,526 $ 66,337 $ 41,273 $ 9,096 Commercial real estate 2,477,398 186,963 105,487 26,204 9,178 Real estate construction 351,923 45,262 3,928 737 630 Retail real estate 1,661,691 9,125 5,355 7,001 8,935 Retail other 47,698 — — — 57 Total $ 5,997,126 $ 413,876 $ 181,107 $ 75,215 $ 27,896
Risk grades of portfolio loans, further sorted by origination	Risk grades of portfolio loans, further sorted by origination year at March 31, 2020 is as follows (dollars in thousand) : Term Loans Amortized Cost Basis by Origination Year Revolving As of March 31, 2020 2020 2019 2018 2017 2016 Prior loans Total Commercial: Risk rating Pass $ 183,585 $ 217,732 $ 158,089 $ 136,995 $ 84,025 $ 129,623 $ 571,489 $ 1,481,538 Watch 11,686 29,396 17,424 10,367 4,617 12,958 63,855 150,303 Special Mention 12,010 5,723 1,918 7,316 7,148 15,166 35,950 85,231 Substandard 2,860 6,108 4,640 5,646 1,939 1,425 20,109 42,727 Substandard non-accrual — 3,245 1,871 541 997 738 — 7,392 Total commercial $ 210,141 $ 262,204 $ 183,942 $ 160,865 $ 98,726 $ 159,910 $ 691,403 $ 1,767,191 Commercial real estate: Risk rating Pass $ 154,317 $ 597,120 $ 485,314 $ 551,251 $ 262,300 $ 425,072 $ 33,927 $ 2,509,301 Watch 20,142 61,908 37,717 19,038 19,039 17,375 2,932 178,151 Special Mention 15,788 15,758 18,964 14,042 6,810 28,508 495 100,365 Substandard 2,802 12,855 3,741 6,211 1,884 637 115 28,245 Substandard non-accrual — 1,345 3,813 1,484 564 1,735 — 8,941 Total commercial real estate $ 193,049 $ 688,986 $ 549,549 $ 592,026 $ 290,597 $ 473,327 $ 37,469 $ 2,825,003 Real estate construction: Risk rating Pass $ 26,489 $ 204,437 $ 139,119 $ 20,465 $ 412 $ 1,534 $ 22,846 $ 415,302 Watch 10,936 12,936 2,582 2,140 214 28,808 Special Mention 2,367 703 — — 152 — — 3,222 Substandard — — 655 44 — — — 699 Substandard non-accrual — — 275 — — 7 — 282 Total real estate construction $ 39,792 $ 218,076 $ 142,631 $ 22,649 $ 778 $ 1,541 $ 22,846 $ 448,313 Retail real estate: Risk rating Pass $ 51,441 $ 201,517 $ 199,235 $ 204,376 $ 184,629 $ 381,085 $ 402,260 $ 1,624,543 Watch 296 3,599 1,893 441 1,034 736 5,076 13,075 Special Mention 108 — 180 — 2,001 1,363 — 3,652 Substandard — 1,285 447 537 761 2,904 453 6,387 Substandard non-accrual 100 209 863 486 254 5,541 1,518 8,971 Total retail real estate $ 51,945 $ 206,610 $ 202,618 $ 205,840 $ 188,679 $ 391,629 $ 409,307 $ 1,656,628 Retail other: Risk rating Pass $ 6,126 $ 13,896 $ 9,331 $ 4,942 $ 1,601 $ 1,419 $ 10,958 $ 48,273 Watch — — — — — — — — Special Mention — — — — — — — — Substandard — — — — — — 5 5 Substandard non-accrual 16 47 — 3 17 — 3 86 Total retail other $ 6,142 $ 13,943 $ 9,331 $ 4,945 $ 1,618 $ 1,419 $ 10,966 $ 48,364
Summary of portfolio loans that are past due and still accruing or on a non-accrual status	Risk grades of portfolio loans, further sorted by origination year at March 31, 2020 is as follows (dollars in thousand) : Term Loans Amortized Cost Basis by Origination Year Revolving As of March 31, 2020 2020 2019 2018 2017 2016 Prior loans Total Commercial: Risk rating Pass $ 183,585 $ 217,732 $ 158,089 $ 136,995 $ 84,025 $ 129,623 $ 571,489 $ 1,481,538 Watch 11,686 29,396 17,424 10,367 4,617 12,958 63,855 150,303 Special Mention 12,010 5,723 1,918 7,316 7,148 15,166 35,950 85,231 Substandard 2,860 6,108 4,640 5,646 1,939 1,425 20,109 42,727 Substandard non-accrual — 3,245 1,871 541 997 738 — 7,392 Total commercial $ 210,141 $ 262,204 $ 183,942 $ 160,865 $ 98,726 $ 159,910 $ 691,403 $ 1,767,191 Commercial real estate: Risk rating Pass $ 154,317 $ 597,120 $ 485,314 $ 551,251 $ 262,300 $ 425,072 $ 33,927 $ 2,509,301 Watch 20,142 61,908 37,717 19,038 19,039 17,375 2,932 178,151 Special Mention 15,788 15,758 18,964 14,042 6,810 28,508 495 100,365 Substandard 2,802 12,855 3,741 6,211 1,884 637 115 28,245 Substandard non-accrual — 1,345 3,813 1,484 564 1,735 — 8,941 Total commercial real estate $ 193,049 $ 688,986 $ 549,549 $ 592,026 $ 290,597 $ 473,327 $ 37,469 $ 2,825,003 Real estate construction: Risk rating Pass $ 26,489 $ 204,437 $ 139,119 $ 20,465 $ 412 $ 1,534 $ 22,846 $ 415,302 Watch 10,936 12,936 2,582 2,140 214 28,808 Special Mention 2,367 703 — — 152 — — 3,222 Substandard — — 655 44 — — — 699 Substandard non-accrual — — 275 — — 7 — 282 Total real estate construction $ 39,792 $ 218,076 $ 142,631 $ 22,649 $ 778 $ 1,541 $ 22,846 $ 448,313 Retail real estate: Risk rating Pass $ 51,441 $ 201,517 $ 199,235 $ 204,376 $ 184,629 $ 381,085 $ 402,260 $ 1,624,543 Watch 296 3,599 1,893 441 1,034 736 5,076 13,075 Special Mention 108 — 180 — 2,001 1,363 — 3,652 Substandard — 1,285 447 537 761 2,904 453 6,387 Substandard non-accrual 100 209 863 486 254 5,541 1,518 8,971 Total retail real estate $ 51,945 $ 206,610 $ 202,618 $ 205,840 $ 188,679 $ 391,629 $ 409,307 $ 1,656,628 Retail other: Risk rating Pass $ 6,126 $ 13,896 $ 9,331 $ 4,942 $ 1,601 $ 1,419 $ 10,958 $ 48,273 Watch — — — — — — — — Special Mention — — — — — — — — Substandard — — — — — — 5 5 Substandard non-accrual 16 47 — 3 17 — 3 86 Total retail other $ 6,142 $ 13,943 $ 9,331 $ 4,945 $ 1,618 $ 1,419 $ 10,966 $ 48,364
Summary of restructured loans	A summary of troubled debt restructurings (“TDR”) loans is as follows (dollars in thousands) : March 31, December 31, 2020 2019 In compliance with modified terms $ 4,949 $ 5,005 30 — 89 days past due — — Included in non-performing loans 1,686 702 Total $ 6,635 $ 5,707
Schedule of details of impaired loans, segregated by category	March 31, 2020 Unpaid Amortized Contractual Cost Amortized Total Average Principal with No Cost Amortized Related Amortized Balance Allowance with Allowance Cost Allowance Cost Commercial $ 11,795 $ 3,751 $ 3,671 $ 7,422 $ 2,822 $ 11,493 Commercial real estate 11,992 9,111 1,206 10,317 642 15,226 Real estate construction 579 562 — 562 — 888 Retail real estate 7,642 6,597 474 7,071 474 12,767 Retail other — — — — — 34 Total $ 32,008 $ 20,021 $ 5,351 $ 25,372 $ 3,938 $ 40,408 December 31, 2019 Unpaid Amortized Contractual Cost Amortized Total Average Principal with No Cost Amortized Related Amortized Balance Allowance with Allowance Cost Allowance Cost Commercial $ 14,415 $ 4,727 $ 5,026 $ 9,753 $ 3,330 $ 13,774 Commercial real estate 14,487 9,883 2,039 11,922 1,049 16,678 Real estate construction 1,116 974 — 974 — 873 Retail real estate 15,581 13,898 474 14,372 474 14,003 Retail other 87 58 — 58 — 42 Total $ 45,686 $ 29,540 $ 7,539 $ 37,079 $ 4,853 $ 45,370
Schedule of activity on the allowance for loan losses	The following table details activity in the allowance. Allocation of a portion of the allowance to one category does not preclude its availability to absorb losses in other categories (dollars in thousands) : As of and for the Three Months Ended March 31, 2020 Commercial Real Estate Retail Real Commercial Real Estate Construction Estate Retail Other Total Beginning balance, prior to adoption of ASC 326 $ 18,291 $ 21,190 $ 3,204 $ 10,495 $ 568 $ 53,748 Adoption of ASC 326 715 9,306 2,954 3,292 566 16,833 Provision for credit losses 5,673 6,526 889 4,037 91 17,216 Charged-off (2,042) (1,099) — (708) (299) (4,148) Recoveries 88 44 146 338 119 735 Ending balance $ 22,725 $ 35,967 $ 7,193 $ 17,454 $ 1,045 $ 84,384 As of and for the Three Months Ended March 31, 2019 Commercial Real Estate Retail Real Commercial Real Estate Construction Estate Retail Other Total Beginning balance $ 17,829 $ 21,137 $ 2,723 $ 8,471 $ 488 $ 50,648 Provision for loan losses 1,793 (1,089) 2 1,357 48 2,111 Charged-off (1,807) (15) — (517) (130) (2,469) Recoveries 183 64 82 192 104 625 Ending balance $ 17,998 $ 20,097 $ 2,807 $ 9,503 $ 510 $ 50,915
Schedule of allowance for loan losses and recorded investments in portfolio loans, by category	The following table presents the allowance and amortized cost of portfolio loans by category (dollars in thousands) : As of March 31, 2020 Commercial Real Estate Retail Real Commercial Real Estate Construction Estate Retail Other Total Allowance Ending balance attributed to: Loans individually evaluated for impairment $ 2,822 $ 642 $ — $ 474 $ — $ 3,938 Loans collectively evaluated for impairment 19,903 35,325 7,193 16,980 1,045 80,446 Ending balance $ 22,725 $ 35,967 $ 7,193 $ 17,454 $ 1,045 $ 84,384 Loans: Loans individually evaluated for impairment $ 7,414 $ 8,452 $ 307 $ 6,618 $ — $ 22,791 Loans collectively evaluated for impairment 1,759,769 2,814,686 447,751 1,649,557 48,364 6,720,127 PCD loans evaluated for impairment 8 1,865 255 453 — 2,581 Ending balance $ 1,767,191 $ 2,825,003 $ 448,313 $ 1,656,628 $ 48,364 $ 6,745,499 As of December 31, 2019 Commercial Real Estate Retail Real Commercial Real Estate Construction Estate Retail Other Total Allowance Ending balance attributed to: Loans individually evaluated for impairment $ 3,330 $ 1,049 $ — $ 474 $ — $ 4,853 Loans collectively evaluated for impairment 14,961 20,141 3,204 10,021 568 48,895 Ending balance $ 18,291 $ 21,190 $ 3,204 $ 10,495 $ 568 $ 53,748 Loans: Loans individually evaluated for impairment $ 9,740 $ 10,018 $ 539 $ 13,676 $ 58 $ 34,031 Loans collectively evaluated for impairment 1,738,615 2,781,495 400,887 1,679,397 49,776 6,650,170 PCI loans evaluated for impairment 13 1,904 435 696 — 3,048 Ending balance $ 1,748,368 $ 2,793,417 $ 401,861 $ 1,693,769 $ 49,834 $ 6,687,249

Deposits (Tables)

Deposits (Tables)	3 Months Ended
Deposits (Tables)	Mar. 31, 2020
Deposits
Schedule of composition of deposits	The composition of deposits is as follows (dollars in thousands) : March 31, 2020 December 31, 2019 Demand deposits, noninterest-bearing $ 1,910,673 $ 1,832,619 Interest-bearing transaction deposits 1,982,137 1,989,854 Saving deposits and money market deposits 2,598,410 2,545,073 Time deposits 1,482,013 1,534,850 Total $ 7,973,233 $ 7,902,396
Schedule of maturities of time deposits	As of March 31, 2020, the scheduled maturities of time deposits are as follows (dollars in thousands) : April 1, 2020 - March 31, 2021 $ 970,198 April 1, 2021 - March 31, 2022 300,817 April 1, 2022 - March 31, 2023 105,097 April 1, 2023 - March 31, 2024 76,896 April 1, 2024 - March 31, 2025 28,994 Thereafter 11 $ 1,482,013

Borrowings (Tables)

Borrowings (Tables)	3 Months Ended
Borrowings (Tables)	Mar. 31, 2020
Borrowings
Summary of long-term debt	Long-term debt is summarized as follows (dollars in thousands) : March 31, December 31, 2020 2019 Notes payable, FHLB, ranging in original maturity from 5 to 10 years , collateralized by FHLB deposits, residential and commercial real estate loans and FHLB stock. $ 35,595 $ 35,600 Term Loan — 48,000 Total long-term borrowings $ 35,595 $ 83,600

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
Earnings Per Common Share (Tables)	Mar. 31, 2020
Earnings Per Common Share
Schedule of computation of earnings per common share	Earnings per common share have been computed as follows (in thousands, except per share data) : Three Months Ended March 31, 2020 2019 Net income $ 15,364 $ 25,469 Shares: Weighted average common shares outstanding 54,662 53,277 Dilutive effect of outstanding options, warrants and restricted stock units as determined by the application of the treasury stock method 251 301 Weighted average common shares outstanding, as adjusted for diluted earnings per share calculation 54,913 53,578 Basic earnings per common share $ 0.28 $ 0.48 Diluted earnings per common share $ 0.28 $ 0.48

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
Accumulated Other Comprehensive Income (Loss) (Tables)	Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss).
Accumulated Other Comprehensive Income (Loss)	The following table represents changes in accumulated other comprehensive income (loss) by component, net of tax, for the periods below (dollars in thousands) : Three Months Ended March 31, 2020 2019 Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Unrealized gains (losses) on debt securities available for sale: Balance at beginning of period $ 21,192 $ (6,032) $ 15,160 $ (9,528) $ 2,716 $ (6,812) Unrealized holding gains (losses) on debt securities available for sale, net 30,086 (8,589) 21,497 6,799 (1,940) 4,859 Unrealized gains on debt securities transferred from held to maturity to available for sale — — — 4,780 (1,364) 3,416 Amounts reclassified from accumulated other comprehensive income, net (1,556) 448 (1,108) 184 (52) 132 Balance at end of period $ 49,722 $ (14,173) $ 35,549 $ 2,235 $ (640) $ 1,595 Unrealized gains (losses) on cash flow hedges: Balance at beginning of period (280) 80 (200) — — — Unrealized holding gains (losses) on cash flow hedges, net (3,129) 892 (2,237) — — — Amounts reclassified from accumulated other comprehensive income, net (15) 4 (11) — — — Balance at end of period $ (3,424) $ 976 $ (2,448) $ — $ — $ — Total accumulated other comprehensive income (loss) $ 46,298 $ (13,197) $ 33,101 $ 2,235 $ (640) $ 1,595

Share-based Compensation (Table

Share-based Compensation (Tables)	3 Months Ended
Share-based Compensation (Tables)	Mar. 31, 2020
Share-based Compensation
Schedule of status of and changes in the Company's stock option awards	A summary of the status of and changes in the Company's stock option awards for the three months ended March 31, 2020 follows: Weighted- Weighted- Average Average Exercise Remaining Contractual Shares Price Term Outstanding at beginning of period 53,185 $ 22.00 Exercised (5,280) 23.26 Forfeited — — Expired (88) 17.05 Outstanding at end of period 47,817 $ 21.87 5.58 Exercisable at end of period 47,817 $ 21.87 5.58
Summary of the changes in company deferred stock units	A summary of the changes in the Company’s stock unit awards for the three months ended March 31, 2020, is as follows: Weighted- Director Weighted- Restricted Average Deferred Average Stock Grant Date Stock Grant Date Units Fair Value Units Fair Value Non-vested at beginning of period 778,317 $ 27.27 21,261 $ 23.18 Granted 3,808 26.26 — — Dividend equivalents earned 6,612 25.50 780 25.50 Vested (8,249) 29.50 — — Forfeited (9,559) 28.96 (597) 25.50 Non-vested at end of period 770,929 $ 27.21 21,444 $ 23.20 Outstanding at end of period 770,929 $ 27.21 91,278 $ 23.40

Outstanding Commitments and C_2

Outstanding Commitments and Contingent Liabilities (Tables)	3 Months Ended
Outstanding Commitments and Contingent Liabilities (Tables)	Mar. 31, 2020
Outstanding Commitments and Contingent Liabilities
Schedule of contractual amount of exposure to off-balance-sheet risk	A summary of the contractual amount of the Company’s exposure to off-balance-sheet risk relating to the Company’s commitments to extend credit and standby letters of credit follows (dollars in thousands) : March 31, 2020 December 31, 2019 Financial instruments whose contract amounts represent credit risk: Commitments to extend credit $ 1,628,461 $ 1,649,565 Standby letters of credit 42,774 42,581

Regulatory Capital (Tables)

Regulatory Capital (Tables)	3 Months Ended
Regulatory Capital (Tables)	Mar. 31, 2020
Regulatory Capital
Schedule of applicable holding company and bank regulatory capital requirements	The following tables summarize the applicable holding company and bank regulatory capital requirements (dollars in thousands) : Minimum Minimum To Be Well Actual Capital Requirement Capitalized Amount Ratio Amount Ratio Amount Ratio As of March 31, 2020: Total Capital (to Risk Weighted Assets) Consolidated $ 1,046,689 13.85 % $ 604,488 8.00 % $ 755,610 10.00 % Busey Bank $ 1,012,447 13.42 % $ 603,538 8.00 % $ 754,422 10.00 % Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 921,827 12.20 % $ 453,366 6.00 % $ 604,488 8.00 % Busey Bank $ 947,583 12.56 % $ 452,653 6.00 % $ 603,538 8.00 % Common Equity Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 847,827 11.22 % $ 340,025 4.50 % $ 491,147 6.50 % Busey Bank $ 947,583 12.56 % $ 339,490 4.50 % $ 490,374 6.50 % Tier 1 Capital (to Average Assets) Consolidated $ 921,827 9.89 % $ 372,696 4.00 % N/A N/A Busey Bank $ 947,583 10.19 % $ 371,799 4.00 % $ 464,749 5.00 % Minimum Minimum To Be Well Actual Capital Requirement Capitalized Amount Ratio Amount Ratio Amount Ratio As of December 31, 2019: Total Capital (to Risk Weighted Assets) Consolidated $ 1,036,143 14.03 % $ 590,826 8.00 % $ 738,532 10.00 % Busey Bank $ 1,099,449 14.92 % $ 589,681 8.00 % $ 737,101 10.00 % Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 922,395 12.49 % $ 443,120 6.00 % $ 590,826 8.00 % Busey Bank $ 1,045,701 14.19 % $ 442,261 6.00 % $ 589,681 8.00 % Common Equity Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 848,395 11.49 % $ 332,340 4.50 % $ 480,046 6.50 % Busey Bank $ 1,045,701 14.19 % $ 331,696 4.50 % $ 479,116 6.50 % Tier 1 Capital (to Average Assets) Consolidated $ 922,395 9.88 % $ 373,360 4.00 % N/A N/A Busey Bank $ 1,045,701 11.19 % $ 373,639 4.00 % $ 467,049 5.00 %

Operating Segments and Relate_2

Operating Segments and Related Information (Tables)	3 Months Ended
Operating Segments and Related Information (Tables)	Mar. 31, 2020
Operating Segments and Related Information
Summary of information relating to operating segments	Following is a summary of selected financial information for the Company’s operating segments (dollars in thousands) : Goodwill Total Assets March 31, 2020 December 31, 2019 March 31, 2020 December 31, 2019 Banking $ 288,436 $ 288,436 $ 9,654,171 $ 9,632,368 Remittance Processing 8,992 8,992 44,744 44,209 Wealth Management 14,108 14,108 36,204 32,760 Other — — (13,714) (13,608) Totals $ 311,536 $ 311,536 $ 9,721,405 $ 9,695,729 Three Months Ended March 31, 2020 2019 Net interest income: Banking $ 71,573 $ 70,638 Remittance Processing 19 18 Wealth Management — — Other (2,159) (2,273) Total net interest income $ 69,433 $ 68,383 Non-interest income: Banking $ 13,168 $ 12,783 Remittance Processing 4,069 4,181 Wealth Management 11,709 9,133 Other (1,429) (152) Total non-interest income $ 27,517 $ 25,945 Non-interest expense: Banking $ 48,515 $ 45,171 Remittance Processing 2,903 2,764 Wealth Management 6,974 5,564 Other 2,122 3,664 Total non-interest expense $ 60,514 $ 57,163 Income before income taxes: Banking $ 19,010 $ 36,139 Remittance Processing 1,185 1,435 Wealth Management 4,735 3,569 Other (5,710) (6,089) Total income before income taxes $ 19,220 $ 35,054 Net income: Banking $ 14,924 $ 26,665 Remittance Processing 860 1,025 Wealth Management 3,599 2,641 Other (4,019) (4,862) Total net income $ 15,364 $ 25,469

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
Derivative Financial Instruments (Tables)	Mar. 31, 2020
Summary of the interest-rate swaps designated as cash flow hedges	A summary of the interest-rate swaps designated as cash flow hedges is presented below (dollars in thousands) : March 31, 2020 December 31, 2019 Notional amount $ 70,000 $ 70,000 Weighted average fixed pay rates 1.80 % 1.80 % Weighted average variable 3 month LIBOR receive rates 0.77 % 1.90 % Weighted average maturity 3.61 yrs 3.86 yrs Unrealized gains (losses), net of tax $ (2,448) $ (200)
Interest rate swap
Summary of fair values of derivative assets and liabilities recorded in consolidated balance sheet	The fair values of derivative assets and liabilities related to derivatives for customers for interest rate swaps recorded in the unaudited Consolidated Balance Sheets are summarized as follows (dollars in thousands) : March 31, 2020 December 31, 2019 Fair value recorded in other assets $ 35,832 $ 12,354 Fair value recorded in other liabilities 35,832 12,354
Summary of gross gains and losses on derivative assets and liabilities recorded in non-interest income and expense in consolidated statements of income	The gross gains and losses on these derivative assets and liabilities recorded in non-interest income and non-interest expense in the unaudited Consolidated Statements of Income are summarized as follows (dollars in thousands) : Three Months Ended March 31, 2020 2019 Gross gains $ 23,478 $ 3,713 Gross losses (23,478) (3,713) Net gains (losses) $ — $ —
Interest rate contract
Summary of gross gains and losses on derivative assets and liabilities recorded in non-interest income and expense in consolidated statements of income	The following table presents the net gains (losses) recorded in accumulated other comprehensive income and the unaudited Consolidated Statements of Income relating to cash flow derivative instruments for the period presented (dollars in thousands) : Three Months Ended March 31, 2020 Amount of (gain) loss recognized in OCI Amount of (gain) loss reclassified from OCI to interest income Interest rate contracts $ 2,237 $ (11)
Interest rate lock commitments and forward sales commitments
Summary of fair values of derivative assets and liabilities recorded in consolidated balance sheet	The fair values of derivative assets and liabilities related to interest rate lock commitments and forward sales commitments recorded in the unaudited Consolidated Balance Sheets are summarized as follows (dollars in thousands) : March 31, 2020 December 31, 2019 Fair value recorded in other assets $ 5,146 $ 1,046 Fair value recorded in other liabilities 7,344 2,187
Summary of gross gains and losses on derivative assets and liabilities recorded in non-interest income and expense in consolidated statements of income	The gross gains and losses on these derivative assets and liabilities related to interest rate lock commitments and forward sales commitments recorded in non-interest income and expense in the unaudited Consolidated Statements of Income are summarized as follows (dollars in thousands) : Three Months Ended March 31, 2020 2019 Gross gains $ 6,670 $ 1,078 Gross (losses) (7,344) (1,118) Net gains (losses) $ (674) $ (40)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
Fair Value Measurements (Tables)	Mar. 31, 2020
Fair Value Measurements
Schedule of financial assets and financial liabilities measured at fair value on a recurring basis	The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (dollars in thousands) : Level 1 Level 2 Level 3 Total March 31, 2020 Inputs Inputs Inputs Fair Value Debt securities available for sale U.S. Treasury securities $ — $ 45,394 $ — $ 45,394 Obligations of U.S. government corporations and agencies — 90,574 — 90,574 Obligations of states and political subdivisions — 284,747 — 284,747 Commercial mortgage-backed securities — 245,421 — 245,421 Residential mortgage-backed securities — 1,000,857 — 1,000,857 Corporate debt securities — 98,952 — 98,952 Equity securities — 4,936 — 4,936 Loans held for sale — 89,943 — 89,943 Derivative assets — 40,978 — 40,978 Derivative liabilities — 46,600 — 46,600 Level 1 Level 2 Level 3 Total December 31, 2019 Inputs Inputs Inputs Fair Value Debt securities available for sale U.S. Treasury securities $ — $ 51,737 $ — $ 51,737 Obligations of U.S. government corporations and agencies — 163,000 — 163,000 Obligations of states and political subdivisions — 268,291 — 268,291 Commercial mortgage-backed securities — 139,287 — 139,287 Residential mortgage-backed securities — 921,966 — 921,966 Corporate debt securities — 103,976 — 103,976 Equity securities — 5,952 — 5,952 Loans held for sale — 68,699 — 68,699 Derivative assets — 13,400 — 13,400 Derivative liabilities — 14,821 — 14,821
Schedule of assets and liabilities measured at fair value on a non-recurring basis	The following table summarizes assets and liabilities measured at fair value on a non-recurring basis, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (dollars in thousands) : Level 1 Level 2 Level 3 Total Inputs Inputs Inputs Fair Value March 31, 2020 Loans evaluated individually $ — $ — $ 1,413 $ 1,413 OREO — — 55 55 Bank property held for sale — — 3,413 3,413 December 31, 2019 Loans evaluated individually $ — $ — $ 2,686 $ 2,686 OREO — — 55 55 Bank property held for sale — — 4,004 4,004
Schedule of quantitative information about Level 3 fair value measurements	The following table presents additional quantitative information about assets measured at fair value on a non-recurring basis for which the Company has utilized level 3 inputs to determine fair value (dollars in thousands) : Quantitative Information about Level 3 Fair Value Measurements Fair Value Valuation Unobservable Range Estimate Techniques Input (Weighted Average) March 31, 2020 Loans evaluated individually $ 1,413 Appraisal of collateral Appraisal adjustments -0.3% to -100% (-69.6)% OREO 55 Appraisal of collateral Appraisal adjustments -25.0% to -100% (-65.0)% Bank property held for sale 3,413 Appraisal of collateral or real estate listing price Appraisal adjustments -6.2% to -64.9% (-27.3)% December 31, 2019 Loans evaluated individually $ 2,686 Appraisal of collateral Appraisal adjustments -2.9% to -100% (-57.8)% OREO 55 Appraisal of collateral Appraisal adjustments -25.0% to -100% (-65.0)% Bank property held for sale 4,004 Appraisal of collateral or real estate listing price Appraisal adjustments -6.2% to -71.3% (-40.7)%
Schedule of estimated fair values of financial instruments	Quantitative Information about Level 3 Fair Value Measurements Fair Value Valuation Unobservable Range Estimate Techniques Input (Weighted Average) March 31, 2020 Loans evaluated individually $ 1,413 Appraisal of collateral Appraisal adjustments -0.3% to -100% (-69.6)% OREO 55 Appraisal of collateral Appraisal adjustments -25.0% to -100% (-65.0)% Bank property held for sale 3,413 Appraisal of collateral or real estate listing price Appraisal adjustments -6.2% to -64.9% (-27.3)% December 31, 2019 Loans evaluated individually $ 2,686 Appraisal of collateral Appraisal adjustments -2.9% to -100% (-57.8)% OREO 55 Appraisal of collateral Appraisal adjustments -25.0% to -100% (-65.0)% Bank property held for sale 4,004 Appraisal of collateral or real estate listing price Appraisal adjustments -6.2% to -71.3% (-40.7)%

Leases (Tables)

Leases (Tables)	3 Months Ended
Leases (Tables)	Mar. 31, 2020
Leases
Schedule of lease costs and other lease information	The following tables represents lease costs and other lease information for the periods presented (dollars in thousands) : Three Months Ended March 31, Lease Costs 2020 2019 Operating lease costs $ 620 $ 533 Variable lease costs 171 111 Short-term lease costs 15 15 Sublease income - - Net lease cost $ 806 $ 659 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating lease cash flows – Fixed payments $ 611 $ 513 Operating lease cash flows – Liability reduction 530 463 Right of use assets obtained during the period in exchange for operating lease liabilities 128 — Weighted average lease term (in years) 6.51 8.33 Weighted average discount rate 3.05% 3.11%
Schedule of future rent commitments	Rent commitments were as follows (dollars in thousands) : Three Months Ended March 31, 2020 Remainder of 2020 $ 1,830 2021 1,814 2022 1,411 2023 1,254 2024 1,022 Thereafter 2,876 Amounts representing interest (1,057) Present value of net future minimum lease payments $ 9,150

Significant Accounting Polici_4

Significant Accounting Policies - Impact of new financial accounting standards (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Recently Issued Accounting Standards
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]		true
Cumulative Effect of New Accounting Principle in Period of Adoption			$ (15,922)
Right of use asset	$ 9,074		9,490
Lease liability	$ 9,150		$ 9,552
Allowance for credit losses on loans
Recently Issued Accounting Standards
Cumulative Effect of New Accounting Principle in Period of Adoption		$ 12,000
Post ASC 326
Recently Issued Accounting Standards
Cumulative Effect of New Accounting Principle in Period of Adoption		(15,900)
Post ASC 326 \| Reserve for off-balance-sheet credit exposures
Recently Issued Accounting Standards
Cumulative Effect of New Accounting Principle in Period of Adoption		$ 3,900

Significant Accounting Polici_5

Significant Accounting Policies - Impact of Topic 326 (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020
Allowance-debt securities available for sale
Accrued interest receivable for debt securities available for sale debt	$ 6,800
Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		$ 16,833
Liabilities
Reserve for off-balance-sheet credit exposures		5,492
Post ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		70,581
Liabilities
Reserve for off-balance-sheet credit exposures		5,492
Pre-ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		53,748
Commercial Loans \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		715
Commercial Loans \| Post ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		19,006
Commercial Loans \| Pre-ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		18,291
Commercial Real Estate Loans \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		9,306
Commercial Real Estate Loans \| Post ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		30,496
Commercial Real Estate Loans \| Pre-ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		21,190
Real Estate Construction \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		2,954
Real Estate Construction \| Post ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		6,158
Real Estate Construction \| Pre-ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		3,204
Retail Real Estate \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		3,292
Retail Real Estate \| Post ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		13,787
Retail Real Estate \| Pre-ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		10,495
Retail Other \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		566
Retail Other \| Post ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		1,134
Retail Other \| Pre-ASC 326 \| Accounting Standards Update 2016-13
Assets
Portfolio Loans, allowance for loan losses (in dollars)		$ 568

Acquisitions - The Banc Ed Corp

Acquisitions - The Banc Ed Corp. (Details) $ / shares in Units, shares in Millions	Aug. 21, 2019$ / shares	Jan. 31, 2019USD ($)$ / sharesshares	Mar. 31, 2020USD ($)$ / shares	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)
Consideration paid
Goodwill			$ 311,536,000		$ 311,536,000
Banc Ed
Merger agreement
Share consideration conversion ratio	8.2067
Per share cash consideration entitled (in dollars per share) \| $ / shares	$ 111.53
Number of common shares issued for acquisition \| shares		6.7
Market value of common stock issued		$ 166,500,000
Common stock		$ 166,515,000
Share price \| $ / shares		$ 24.76
Goodwill acquired		$ 41,400,000
Business acquisition expenses			0	$ 1,000,000
Assets acquired:
Cash and cash equivalents		42,013,000
Securities		692,716,000
Loans held for sale		2,157,000
Portfolio loans		873,336,000
Premises and equipment		32,156,000
Other intangible assets		32,617,000
Mortgage servicing rights		6,946,000
Other assets		57,332,000
Total assets acquired		1,739,273,000
Liabilities assumed:
Deposits		1,439,203,000
Other borrowings		63,439,000
Other liabilities		20,153,000
Total liabilities assumed		1,522,795,000
Net assets acquired		216,478,000
Consideration paid
Cash		91,400,000
Common stock		166,515,000
Total consideration paid		257,915,000
Goodwill		$ 41,437,000
Banc Ed \| Pro Forma
Consideration paid
Total revenues (net interest income plus non-interest income)			100,652,000,000
Net income			$ 27,390,000,000
Diluted earnings per common share (in dollars per share) \| $ / shares			$ 0.49
IST \| Non-interest expense
Merger agreement
Business acquisition expenses			$ 100,000	$ 200,000

Securities - General Disclosure

Securities - General Disclosures (Details) - USD ($)	3 Months Ended
Securities - General Disclosures (Details) - USD ($)	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Debt Securities
Equity securities consisting of common stock and money market mutual funds, fair value	$ 4,936,000		$ 5,952,000
Unrealized (losses) gains recognized on equity securities	(987,000)	$ 216,000
Debt securities available for sale
Amortized Cost	1,716,223,000		1,627,065,000
Gross Unrealized Gains	50,775,000		22,021,000
Gross Unrealized Losses	(1,053,000)		(829,000)
Fair Value	1,765,945,000		1,648,257,000
Debt securities available for sale, Amortized Cost
Due in one year or less	142,273,000
Due after one year through five years	275,344,000
Due after five years through ten years	244,765,000
Due after ten years	1,053,841,000
Amortized Cost	1,716,223,000		1,627,065,000
Debt securities available for sale, Fair Value
Due in one year or less	142,758,000
Due after one year through five years	282,349,000
Due after five years through ten years	252,843,000
Due after ten years	1,087,995,000
Fair Value	1,765,945,000		1,648,257,000
Realized gains and losses related to sales and calls of securities AFS
Gross security gains	1,561,000
Gross security (losses)	(5,000)	(183,000)
Net gains (losses) on sales of securities	1,556,000	$ (183,000)
Debt securities available for sale, Fair Value
Continuous unrealized losses existing for less than 12 months, gross	71,716,000		122,991,000
Continuous unrealized losses existing for greater than 12 months, gross	1,417,000		53,851,000
Total, gross	73,133,000		176,842,000
Debt securities available for sale, Unrealized Losses
Continuous unrealized losses existing for less than 12 months, gross	(1,039,000)		(448,000)
Continuous unrealized losses existing greater than 12 months, gross	(14,000)		(381,000)
Total, gross	$ (1,053,000)		(829,000)
Security portfolio evaluated for other-than-temporary impairment	1,143
Number of securities in unrealized loss position	45
Securities in unrealized loss position as a percentage of aggregate carrying value of investments	1.42%
Collateral
Realized gains and losses related to sales and calls of securities AFS
Carrying amount of investment securities pledged as collateral	$ 647,800,000		704,400,000
U.S. Treasury securities
Debt securities available for sale
Amortized Cost	44,545,000		51,472,000
Gross Unrealized Gains	849,000		265,000
Fair Value	45,394,000		51,737,000
Debt securities available for sale, Amortized Cost
Amortized Cost	44,545,000		51,472,000
Debt securities available for sale, Fair Value
Fair Value	45,394,000		51,737,000
Obligations of U.S. government corporations and agencies
Debt securities available for sale
Amortized Cost	87,787,000		160,364,000
Gross Unrealized Gains	2,829,000		2,684,000
Gross Unrealized Losses	(42,000)		(48,000)
Fair Value	90,574,000		163,000,000
Debt securities available for sale, Amortized Cost
Amortized Cost	87,787,000		160,364,000
Debt securities available for sale, Fair Value
Fair Value	90,574,000		163,000,000
Debt securities available for sale, Fair Value
Continuous unrealized losses existing for less than 12 months, gross	6,006,000		6,362,000
Total, gross	6,006,000		6,362,000
Debt securities available for sale, Unrealized Losses
Continuous unrealized losses existing for less than 12 months, gross	(42,000)		(48,000)
Total, gross	(42,000)		(48,000)
Obligations of states and political subdivisions
Debt securities available for sale
Amortized Cost	278,741,000		262,492,000
Gross Unrealized Gains	6,359,000		5,810,000
Gross Unrealized Losses	(353,000)		(11,000)
Fair Value	284,747,000		268,291,000
Debt securities available for sale, Amortized Cost
Amortized Cost	278,741,000		262,492,000
Debt securities available for sale, Fair Value
Fair Value	284,747,000		268,291,000
Debt securities available for sale, Fair Value
Continuous unrealized losses existing for less than 12 months, gross	15,445,000		4,981,000
Continuous unrealized losses existing for greater than 12 months, gross			1,548,000
Total, gross	15,445,000		6,529,000
Debt securities available for sale, Unrealized Losses
Continuous unrealized losses existing for less than 12 months, gross	(353,000)		(11,000)
Total, gross	(353,000)		(11,000)
Commercial mortgage-backed securities
Debt securities available for sale
Amortized Cost	239,284,000		137,733,000
Gross Unrealized Gains	6,139,000		1,700,000
Gross Unrealized Losses	(2,000)		(146,000)
Fair Value	245,421,000		139,287,000
Debt securities available for sale, Amortized Cost
Amortized Cost	239,284,000		137,733,000
Debt securities available for sale, Fair Value
Fair Value	245,421,000		139,287,000
Debt securities available for sale, Fair Value
Continuous unrealized losses existing for less than 12 months, gross	8,522,000		33,322,000
Continuous unrealized losses existing for greater than 12 months, gross			2,044,000
Total, gross	8,522,000		35,366,000
Debt securities available for sale, Unrealized Losses
Continuous unrealized losses existing for less than 12 months, gross	(2,000)		(144,000)
Continuous unrealized losses existing greater than 12 months, gross			(2,000)
Total, gross	(2,000)		(146,000)
Residential mortgage-backed securities
Debt securities available for sale
Amortized Cost	966,805,000		912,308,000
Gross Unrealized Gains	34,071,000		10,282,000
Gross Unrealized Losses	(19,000)		(624,000)
Fair Value	1,000,857,000		921,966,000
Debt securities available for sale, Amortized Cost
Amortized Cost	966,805,000		912,308,000
Debt securities available for sale, Fair Value
Fair Value	1,000,857,000		921,966,000
Debt securities available for sale, Fair Value
Continuous unrealized losses existing for less than 12 months, gross	626,000		78,326,000
Continuous unrealized losses existing for greater than 12 months, gross	1,417,000		50,259,000
Total, gross	2,043,000		128,585,000
Debt securities available for sale, Unrealized Losses
Continuous unrealized losses existing for less than 12 months, gross	(5,000)		(245,000)
Continuous unrealized losses existing greater than 12 months, gross	(14,000)		(379,000)
Total, gross	(19,000)		(624,000)
Corporate debt securities
Debt securities available for sale
Amortized Cost	99,061,000		102,696,000
Gross Unrealized Gains	528,000		1,280,000
Gross Unrealized Losses	(637,000)
Fair Value	98,952,000		103,976,000
Debt securities available for sale, Amortized Cost
Amortized Cost	99,061,000		102,696,000
Debt securities available for sale, Fair Value
Fair Value	98,952,000		$ 103,976,000
Debt securities available for sale, Fair Value
Continuous unrealized losses existing for less than 12 months, gross	41,117,000
Total, gross	41,117,000
Debt securities available for sale, Unrealized Losses
Continuous unrealized losses existing for less than 12 months, gross	(637,000)
Total, gross	$ (637,000)

Portfolio loans and allowance f

Portfolio loans and allowance for loan losses - Distribution of portfolio loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Distributions of portfolio loans
Portfolio loans	$ 6,745,499	$ 6,687,249
Allowance for loan losses	(84,384)	(53,748)	$ (50,915)	$ (50,648)
Portfolio loans, net	6,661,115	6,633,501
Net deferred loan origination costs	6,400	6,200
Net accretable purchase accounting adjustments	17,700	20,200
Commercial Loans
Distributions of portfolio loans
Portfolio loans	1,767,191	1,748,368
Allowance for loan losses	(22,725)	(18,291)	(17,998)	(17,829)
Commercial Real Estate Loans
Distributions of portfolio loans
Portfolio loans	2,825,003	2,793,417
Allowance for loan losses	(35,967)	(21,190)	(20,097)	(21,137)
Real Estate Construction
Distributions of portfolio loans
Portfolio loans	448,313	401,861
Allowance for loan losses	(7,193)	(3,204)	(2,807)	(2,723)
Retail Real Estate
Distributions of portfolio loans
Portfolio loans	1,656,628	1,693,769
Allowance for loan losses	(17,454)	(10,495)	(9,503)	(8,471)
Loans purchased	43,900
Retail Other
Distributions of portfolio loans
Portfolio loans	48,364	49,834
Allowance for loan losses	$ (1,045)	$ (568)	$ (510)	$ (488)

Portfolio loans - Narrative (De

Portfolio loans - Narrative (Details)	3 Months Ended
Portfolio loans - Narrative (Details)	Mar. 31, 2020USD ($)loan	Mar. 31, 2019USD ($)loan
Distributions of portfolio loans
Gross interest income that would have been recorded if impaired loans had been current	$ 500,000	$ 700,000
Loans classified as a TDR		$ 0
TDRs subsequently classified as non-performing and had payment defaults \| loan	0	0
Commercial Loans
Distributions of portfolio loans
Loans classified as a TDR	$ 500,000
Commercial Real Estate Loans
Distributions of portfolio loans
Loans classified as a TDR	700,000
Retail Real Estate
Distributions of portfolio loans
Loans classified as a TDR		$ 3,100,000
Performing loans classified as TDRs \| loan		1
Loans in the process of foreclosure	1,300,000
Maximum \| Commercial Real Estate Loans
Distributions of portfolio loans
Limit where loans are processed through an expedited underwriting process	1,000,000
Watch \| Commercial Loans
Distributions of portfolio loans
Limit above which loans are annually reviewed	1,000,000
Special Mention
Distributions of portfolio loans
Limit above which loans are annually reviewed	$ 350,000

Portfolio loans - Summary of ri

Portfolio loans - Summary of risk grades segregated by category (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loans
Portfolio loans	$ 6,745,499	$ 6,687,249
Pass
Loans
Portfolio loans	6,078,957	5,997,126
Watch
Loans
Portfolio loans	370,337	413,876
Special Mention
Loans
Portfolio loans	192,470	181,107
Substandard
Loans
Portfolio loans	78,063	75,215
Substandard Non-accrual
Loans
Portfolio loans	25,672	27,896
Commercial
Loans
Portfolio loans	1,767,191
Commercial \| Pass
Loans
Portfolio loans	1,481,538	1,458,416
Commercial \| Watch
Loans
Portfolio loans	150,303	172,526
Commercial \| Special Mention
Loans
Portfolio loans	85,231	66,337
Commercial \| Substandard
Loans
Portfolio loans	42,727	41,273
Commercial \| Substandard Non-accrual
Loans
Portfolio loans	7,392	9,096
Commercial real estate
Loans
Portfolio loans	2,825,003
Commercial real estate \| Pass
Loans
Portfolio loans	2,509,301	2,477,398
Commercial real estate \| Watch
Loans
Portfolio loans	178,151	186,963
Commercial real estate \| Special Mention
Loans
Portfolio loans	100,365	105,487
Commercial real estate \| Substandard
Loans
Portfolio loans	28,245	26,204
Commercial real estate \| Substandard Non-accrual
Loans
Portfolio loans	8,941	9,178
Real estate construction
Loans
Portfolio loans	448,313
Real estate construction \| Pass
Loans
Portfolio loans	415,302	351,923
Real estate construction \| Watch
Loans
Portfolio loans	28,808	45,262
Real estate construction \| Special Mention
Loans
Portfolio loans	3,222	3,928
Real estate construction \| Substandard
Loans
Portfolio loans	699	737
Real estate construction \| Substandard Non-accrual
Loans
Portfolio loans	282	630
Retail Real Estate
Loans
Portfolio loans	1,656,628
Retail Real Estate \| Pass
Loans
Portfolio loans	1,624,543	1,661,691
Retail Real Estate \| Watch
Loans
Portfolio loans	13,075	9,125
Retail Real Estate \| Special Mention
Loans
Portfolio loans	3,652	5,355
Retail Real Estate \| Substandard
Loans
Portfolio loans	6,387	7,001
Retail Real Estate \| Substandard Non-accrual
Loans
Portfolio loans	8,971	8,935
Retail Other
Loans
Portfolio loans	48,364
Retail Other \| Pass
Loans
Portfolio loans	48,273	47,698
Retail Other \| Substandard
Loans
Portfolio loans	5
Retail Other \| Substandard Non-accrual
Loans
Portfolio loans	86	57
Commercial Loans
Loans
Portfolio loans	1,767,191	1,748,368
Commercial Real Estate Loans
Loans
Portfolio loans	2,825,003	2,793,417
Real Estate Construction
Loans
Portfolio loans	448,313	401,861
Retail Real Estate
Loans
Portfolio loans	1,656,628	1,693,769
Retail Other
Loans
Portfolio loans	$ 48,364	$ 49,834

Portfolio loans - Risk grades o

Portfolio loans - Risk grades of portfolio loans by origination year (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loans
Ending balance	$ 6,745,499	$ 6,687,249
Pass
Loans
Ending balance	6,078,957	5,997,126
Watch
Loans
Ending balance	370,337	413,876
Special Mention
Loans
Ending balance	192,470	181,107
Substandard
Loans
Ending balance	78,063	75,215
Substandard Non-accrual
Loans
Ending balance	25,672	27,896
Commercial
Loans
2020	210,141
2019	262,204
2018	183,942
2017	160,865
2016	98,726
Prior	159,910
Revolving loans	691,403
Ending balance	1,767,191
Commercial \| Pass
Loans
2020	183,585
2019	217,732
2018	158,089
2017	136,995
2016	84,025
Prior	129,623
Revolving loans	571,489
Ending balance	1,481,538	1,458,416
Commercial \| Watch
Loans
2020	11,686
2019	29,396
2018	17,424
2017	10,367
2016	4,617
Prior	12,958
Revolving loans	63,855
Ending balance	150,303	172,526
Commercial \| Special Mention
Loans
2020	12,010
2019	5,723
2018	1,918
2017	7,316
2016	7,148
Prior	15,166
Revolving loans	35,950
Ending balance	85,231	66,337
Commercial \| Substandard
Loans
2020	2,860
2019	6,108
2018	4,640
2017	5,646
2016	1,939
Prior	1,425
Revolving loans	20,109
Ending balance	42,727	41,273
Commercial \| Substandard Non-accrual
Loans
2019	3,245
2018	1,871
2017	541
2016	997
Prior	738
Ending balance	7,392	9,096
Commercial real estate
Loans
2020	193,049
2019	688,986
2018	549,549
2017	592,026
2016	290,597
Prior	473,327
Revolving loans	37,469
Ending balance	2,825,003
Commercial real estate \| Pass
Loans
2020	154,317
2019	597,120
2018	485,314
2017	551,251
2016	262,300
Prior	425,072
Revolving loans	33,927
Ending balance	2,509,301	2,477,398
Commercial real estate \| Watch
Loans
2020	20,142
2019	61,908
2018	37,717
2017	19,038
2016	19,039
Prior	17,375
Revolving loans	2,932
Ending balance	178,151	186,963
Commercial real estate \| Special Mention
Loans
2020	15,788
2019	15,758
2018	18,964
2017	14,042
2016	6,810
Prior	28,508
Revolving loans	495
Ending balance	100,365	105,487
Commercial real estate \| Substandard
Loans
2020	2,802
2019	12,855
2018	3,741
2017	6,211
2016	1,884
Prior	637
Revolving loans	115
Ending balance	28,245	26,204
Commercial real estate \| Substandard Non-accrual
Loans
2019	1,345
2018	3,813
2017	1,484
2016	564
Prior	1,735
Ending balance	8,941	9,178
Real estate construction
Loans
2020	39,792
2019	218,076
2018	142,631
2017	22,649
2016	778
Prior	1,541
Revolving loans	22,846
Ending balance	448,313
Real estate construction \| Pass
Loans
2020	26,489
2019	204,437
2018	139,119
2017	20,465
2016	412
Prior	1,534
Revolving loans	22,846
Ending balance	415,302	351,923
Real estate construction \| Watch
Loans
2020	10,936
2019	12,936
2018	2,582
2017	2,140
2016	214
Ending balance	28,808	45,262
Real estate construction \| Special Mention
Loans
2020	2,367
2019	703
2016	152
Ending balance	3,222	3,928
Real estate construction \| Substandard
Loans
2018	655
2017	44
Ending balance	699	737
Real estate construction \| Substandard Non-accrual
Loans
2018	275
Prior	7
Ending balance	282	630
Retail Real Estate
Loans
2020	51,945
2019	206,610
2018	202,618
2017	205,840
2016	188,679
Prior	391,629
Revolving loans	409,307
Ending balance	1,656,628
Retail Real Estate \| Pass
Loans
2020	51,441
2019	201,517
2018	199,235
2017	204,376
2016	184,629
Prior	381,085
Revolving loans	402,260
Ending balance	1,624,543	1,661,691
Retail Real Estate \| Watch
Loans
2020	296
2019	3,599
2018	1,893
2017	441
2016	1,034
Prior	736
Revolving loans	5,076
Ending balance	13,075	9,125
Retail Real Estate \| Special Mention
Loans
2020	108
2018	180
2016	2,001
Prior	1,363
Ending balance	3,652	5,355
Retail Real Estate \| Substandard
Loans
2019	1,285
2018	447
2017	537
2016	761
Prior	2,904
Revolving loans	453
Ending balance	6,387	7,001
Retail Real Estate \| Substandard Non-accrual
Loans
2020	100
2019	209
2018	863
2017	486
2016	254
Prior	5,541
Revolving loans	1,518
Ending balance	8,971	8,935
Retail Other
Loans
2020	6,142
2019	13,943
2018	9,331
2017	4,945
2016	1,618
Prior	1,419
Revolving loans	10,966
Ending balance	48,364
Retail Other \| Pass
Loans
2020	6,126
2019	13,896
2018	9,331
2017	4,942
2016	1,601
Prior	1,419
Revolving loans	10,958
Ending balance	48,273	47,698
Retail Other \| Substandard
Loans
Revolving loans	5
Ending balance	5
Retail Other \| Substandard Non-accrual
Loans
2020	16
2019	47
2017	3
2016	17
Revolving loans	3
Ending balance	86	57
Commercial Loans
Loans
Ending balance	1,767,191	1,748,368
Commercial Real Estate Loans
Loans
Ending balance	2,825,003	2,793,417
Real Estate Construction
Loans
Ending balance	448,313	401,861
Retail Real Estate
Loans
Ending balance	1,656,628	1,693,769
Retail Other
Loans
Ending balance	$ 48,364	$ 49,834

Portfolio loans and allowance_2

Portfolio loans and allowance for loan losses - Analysis of loans past due and still accruing or non-accrual status (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loans past due
90+Days	$ 1,540	$ 1,611
Non-accrual Loans	25,672	27,896
30 to 59 Days
Loans past due
Loans past due, still accruing	8,754	8,820
60 to 89 Days
Loans past due
Loans past due, still accruing	1,396	5,451
Commercial
Loans past due
90+Days		199
Non-accrual Loans	7,392	9,096
Commercial \| 30 to 59 Days
Loans past due
Loans past due, still accruing	1,047	1,075
Commercial \| 60 to 89 Days
Loans past due
Loans past due, still accruing		1,014
Commercial real estate
Loans past due
90+Days	159	584
Non-accrual Loans	8,941	9,178
Commercial real estate \| 30 to 59 Days
Loans past due
Loans past due, still accruing	690	2,653
Commercial real estate \| 60 to 89 Days
Loans past due
Loans past due, still accruing	387	3,121
Real estate construction
Loans past due
Non-accrual Loans	282	630
Real estate construction \| 30 to 59 Days
Loans past due
Loans past due, still accruing		19
Retail Real Estate
Loans past due
90+Days	1,287	828
Non-accrual Loans	8,971	8,935
Retail Real Estate \| 30 to 59 Days
Loans past due
Loans past due, still accruing	6,910	5,021
Retail Real Estate \| 60 to 89 Days
Loans past due
Loans past due, still accruing	997	1,248
Retail Other
Loans past due
90+Days	94
Non-accrual Loans	86	57
Retail Other \| 30 to 59 Days
Loans past due
Loans past due, still accruing	107	52
Retail Other \| 60 to 89 Days
Loans past due
Loans past due, still accruing	$ 12	$ 68

Portfolio loans - Summary of TD

Portfolio loans - Summary of TDR loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Restructured loans
Total loans	$ 6,635	$ 5,707
In compliance with modified terms
Restructured loans
Total loans	4,949	5,005
Included in non-performing loans
Restructured loans
Total loans	$ 1,686	$ 702

Portfolio loans - Loans identif

Portfolio loans - Loans identified as impaired, segregated by category (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Loans identified as impaired
Unpaid Contractual Principal Balance	$ 32,008	$ 45,686
Recorded Investment with No Allowance	20,021	29,540
Recorded Investment with Allowance	5,351	7,539
Total Recorded Investment	25,372	37,079
Related Allowance	3,938	4,853
Average Recorded Investment	40,408	45,370
Collateral dependent loans secured by real estate or business assets	13,500
Commercial Loans
Loans identified as impaired
Unpaid Contractual Principal Balance	11,795	14,415
Recorded Investment with No Allowance	3,751	4,727
Recorded Investment with Allowance	3,671	5,026
Total Recorded Investment	7,422	9,753
Related Allowance	2,822	3,330
Average Recorded Investment	11,493	13,774
Commercial Real Estate Loans
Loans identified as impaired
Unpaid Contractual Principal Balance	11,992	14,487
Recorded Investment with No Allowance	9,111	9,883
Recorded Investment with Allowance	1,206	2,039
Total Recorded Investment	10,317	11,922
Related Allowance	642	1,049
Average Recorded Investment	15,226	16,678
Real Estate Construction
Loans identified as impaired
Unpaid Contractual Principal Balance	579	1,116
Recorded Investment with No Allowance	562	974
Total Recorded Investment	562	974
Average Recorded Investment	888	873
Retail Real Estate
Loans identified as impaired
Unpaid Contractual Principal Balance	7,642	15,581
Recorded Investment with No Allowance	6,597	13,898
Recorded Investment with Allowance	474	474
Total Recorded Investment	7,071	14,372
Related Allowance	474	474
Average Recorded Investment	12,767	14,003
Retail Other
Loans identified as impaired
Unpaid Contractual Principal Balance		87
Recorded Investment with No Allowance		58
Total Recorded Investment		58
Average Recorded Investment	$ 34	$ 42

Portfolio loans - Activity in t

Portfolio loans - Activity in the allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Dec. 31, 2019
Activity in the allowance for loan losses
Beginning balance	$ 53,748	$ 50,648
Provision for loan losses	17,216	2,111
Charged-off	(4,148)	(2,469)
Recoveries	735	625
Ending balance	84,384	50,915
Allowance for loan losses Ending balance attributed to:
Loans individually evaluated for impairment			$ 3,938	$ 4,853
Loans collectively evaluated for impairment			80,446	48,895
Ending balance	53,748	50,915	84,384	53,748
Loans:
Loans individually evaluated for impairment			22,791	34,031
Loans collectively evaluated for impairment			6,720,127	6,650,170
PCI loans evaluated for impairment			2,581	3,048
Ending balance			6,745,499	6,687,249
Commercial Loans
Activity in the allowance for loan losses
Beginning balance	18,291	17,829
Provision for loan losses	5,673	1,793
Charged-off	(2,042)	(1,807)
Recoveries	88	183
Ending balance	22,725	17,998
Allowance for loan losses Ending balance attributed to:
Loans individually evaluated for impairment			2,822	3,330
Loans collectively evaluated for impairment			19,903	14,961
Ending balance	18,291	17,998	22,725	18,291
Loans:
Loans individually evaluated for impairment			7,414	9,740
Loans collectively evaluated for impairment			1,759,769	1,738,615
PCI loans evaluated for impairment			8	13
Ending balance			1,767,191	1,748,368
Commercial Real Estate Loans
Activity in the allowance for loan losses
Beginning balance	21,190	21,137
Provision for loan losses	6,526	(1,089)
Charged-off	(1,099)	(15)
Recoveries	44	64
Ending balance	35,967	20,097
Allowance for loan losses Ending balance attributed to:
Loans individually evaluated for impairment			642	1,049
Loans collectively evaluated for impairment			35,325	20,141
Ending balance	21,190	20,097	35,967	21,190
Loans:
Loans individually evaluated for impairment			8,452	10,018
Loans collectively evaluated for impairment			2,814,686	2,781,495
PCI loans evaluated for impairment			1,865	1,904
Ending balance			2,825,003	2,793,417
Real Estate Construction
Activity in the allowance for loan losses
Beginning balance	3,204	2,723
Provision for loan losses	889	2
Recoveries	146	82
Ending balance	7,193	2,807
Allowance for loan losses Ending balance attributed to:
Loans collectively evaluated for impairment			7,193	3,204
Ending balance	3,204	2,807	7,193	3,204
Loans:
Loans individually evaluated for impairment			307	539
Loans collectively evaluated for impairment			447,751	400,887
PCI loans evaluated for impairment			255	435
Ending balance			448,313	401,861
Retail Real Estate
Activity in the allowance for loan losses
Beginning balance	10,495	8,471
Provision for loan losses	4,037	1,357
Charged-off	(708)	(517)
Recoveries	338	192
Ending balance	17,454	9,503
Allowance for loan losses Ending balance attributed to:
Loans individually evaluated for impairment			474	474
Loans collectively evaluated for impairment			16,980	10,021
Ending balance	10,495	9,503	17,454	10,495
Loans:
Loans individually evaluated for impairment			6,618	13,676
Loans collectively evaluated for impairment			1,649,557	1,679,397
PCI loans evaluated for impairment			453	696
Ending balance			1,656,628	1,693,769
Retail Other
Activity in the allowance for loan losses
Beginning balance	568	488
Provision for loan losses	91	48
Charged-off	(299)	(130)
Recoveries	119	104
Ending balance	1,045	510
Allowance for loan losses Ending balance attributed to:
Loans collectively evaluated for impairment			1,045	568
Ending balance	568	$ 510	1,045	568
Loans:
Loans individually evaluated for impairment				58
Loans collectively evaluated for impairment			48,364	49,776
Ending balance			$ 48,364	49,834
Post ASC 326
Activity in the allowance for loan losses
Beginning balance	16,833
Allowance for loan losses Ending balance attributed to:
Ending balance	16,833			16,833
Post ASC 326 \| Commercial Loans
Activity in the allowance for loan losses
Beginning balance	715
Allowance for loan losses Ending balance attributed to:
Ending balance	715			715
Post ASC 326 \| Commercial Real Estate Loans
Activity in the allowance for loan losses
Beginning balance	9,306
Allowance for loan losses Ending balance attributed to:
Ending balance	9,306			9,306
Post ASC 326 \| Real Estate Construction
Activity in the allowance for loan losses
Beginning balance	2,954
Allowance for loan losses Ending balance attributed to:
Ending balance	2,954			2,954
Post ASC 326 \| Retail Real Estate
Activity in the allowance for loan losses
Beginning balance	3,292
Allowance for loan losses Ending balance attributed to:
Ending balance	3,292			3,292
Post ASC 326 \| Retail Other
Activity in the allowance for loan losses
Beginning balance	566
Allowance for loan losses Ending balance attributed to:
Ending balance	566			566
Pre-ASC 326
Activity in the allowance for loan losses
Beginning balance	53,748
Allowance for loan losses Ending balance attributed to:
Ending balance	53,748			53,748
Pre-ASC 326 \| Commercial Loans
Activity in the allowance for loan losses
Beginning balance	18,291
Allowance for loan losses Ending balance attributed to:
Ending balance	18,291			18,291
Pre-ASC 326 \| Commercial Real Estate Loans
Activity in the allowance for loan losses
Beginning balance	21,190
Allowance for loan losses Ending balance attributed to:
Ending balance	21,190			21,190
Pre-ASC 326 \| Real Estate Construction
Activity in the allowance for loan losses
Beginning balance	3,204
Allowance for loan losses Ending balance attributed to:
Ending balance	3,204			3,204
Pre-ASC 326 \| Retail Real Estate
Activity in the allowance for loan losses
Beginning balance	10,495
Allowance for loan losses Ending balance attributed to:
Ending balance	10,495			10,495
Pre-ASC 326 \| Retail Other
Activity in the allowance for loan losses
Beginning balance	568
Allowance for loan losses Ending balance attributed to:
Ending balance	$ 568			$ 568

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Deposits
Demand deposits, noninterest-bearing	$ 1,910,673	$ 1,832,619
Interest-bearing transaction deposits	1,982,137	1,989,854
Saving deposits and money market deposits	2,598,410	2,545,073
Time deposits	1,482,013	1,534,850
Total deposits	7,973,233	7,902,396
Brokered saving deposits and money market deposits	13,800	12,500
Aggregate amount of time deposits (minimum denomination of $100,000)	833,800	854,100
Time deposits minimum denomination of $250,000 or more	329,900	297,400
Brokered deposits included in the balance of time deposits	5,200	5,500
Deposits
Total	1,482,013	$ 1,534,850
Maturities of time deposits
April 1, 2020 - March 31, 2021	970,198
April 1, 2021 - March 31, 2022	300,817
April 1, 2022 - March 31, 2023	105,097
April 1, 2023 - March 31, 2024	76,896
April 1, 2024 - March 31, 2025	28,994
Thereafter	$ 11

Borrowings - Maturity period (D

Borrowings - Maturity period (Details)	3 Months Ended
Borrowings - Maturity period (Details)	Mar. 31, 2020
Maturity period
Maximum maturity period of short-term debt	1 year

Borrowings - Amended and Restat

Borrowings - Amended and Restated Credit Agreement (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019	Jan. 29, 2019
Revolving loan facility
Borrowings
Maximum borrowing capacity			$ 20,000,000
Outstanding amounts	$ 20,000,000	$ 0
Interest rate (as a percent)	1.75%
Term Loan
Borrowings
Maximum borrowing capacity			$ 60,000,000
Interest rate (as a percent)			1.50%

Borrowings - Long-term Debt (De

Borrowings - Long-term Debt (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Long-term debt
Notes payable, FHLB, ranging in original maturity from 5 to 10 years, collateralized by FHLB deposits, residential and commercial real estate loans and FHLB stock	$ 35,595	$ 35,600
Term Loan		48,000
Total long-term borrowings	$ 35,595	$ 83,600
FHLB advances
Long-term debt
Weighted average rate (as a percent)	0.52%	1.53%
FHLB advances \| Minimum
Long-term debt
Notes payable original maturity term	5 years	5 years
Interest rate (as a percent)	0.05%	1.25%
FHLB advances \| Maximum
Long-term debt
Notes payable original maturity term	10 years	10 years
Interest rate (as a percent)	3.04%	3.04%

Borrowings - Senior notes and S

Borrowings - Senior notes and Subordinate Notes (Details) - USD ($) $ in Millions	May 25, 2017	Mar. 31, 2020	Dec. 31, 2019
Senior notes
Long-term debt
Issuance of debt	$ 40
Interest rate (as a percent)	3.75%
Unamortized debt issuance cost		$ 0.3	$ 0.3
Subordinated debt
Long-term debt
Issuance of debt	$ 60
Interest rate (as a percent)	4.75%
Term of debt instrument	5 years
Unamortized debt issuance cost		$ 0.7	$ 0.8
Three-month LIBOR \| Subordinated debt
Long-term debt
Floating interest rate margin (as a percent)	2.919%

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net income per share calculations for basic and diluted methods
Net income available to common stockholders	$ 15,364	$ 25,469
Shares:
Weighted average common shares outstanding	54,662,000	53,277,000
Dilutive effect of outstanding options, warrants and restricted stock units as determined by the application of the treasury stock method (in shares)	251,000	301,000
Weighted average common shares outstanding, as adjusted for diluted earnings per share calculation	54,913,000	53,578,000
Basic earnings per common share (in dollars per share)	$ 0.28	$ 0.48
Diluted earnings per common share (in dollars per share)	$ 0.28	$ 0.48
Stock options
Anti-dilutive securities excluded from the calculation of common stock equivalents
Number of anti-dilutive securities (in shares)	39,965	49,646
Restricted stock unit
Anti-dilutive securities excluded from the calculation of common stock equivalents
Number of anti-dilutive securities (in shares)	204,277	172,571
Warrants
Anti-dilutive securities excluded from the calculation of common stock equivalents
Number of anti-dilutive securities (in shares)	191,278	191,278

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Changes in accumulated other comprehensive income (loss) by component, net of tax
Beginning balance	$ 1,220,434	$ 994,964	$ 994,964
Unrealized gains (losses) on debt securities available for sale:
Unrealized holding gains (losses) on debt securities available for sale, Tax Effect	(8,589)	(1,940)
Unrealized holding gains (losses) on debt securities available for sale, Net of Tax	21,497	4,859
Unrealized gains on debt securities transferred from held to maturity to available for sale, Tax Effect		1,364
Unrealized gains on debt securities transferred from held to maturity to available for sale, Net of Tax		3,416
Amounts reclassified from accumulated other comprehensive income, Tax Effect	448	(52)
Amounts reclassified from accumulated other comprehensive income, Net of Tax	1,108	(132)
Unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges, Tax Effect	(892)
Unrealized holding gains (losses) on cash flow hedges, Net of Tax	(2,237)
Amounts reclassified from accumulated other comprehensive income, Tax Effect	(4)
Reclassification adjustment for realized losses (gains) on cash flow hedges	(11)
Ending balance	1,217,585	1,186,141	1,220,434
Accumulated Other Comprehensive Income (Loss)
Changes in accumulated other comprehensive income (loss) by component, net of tax
Beginning balance	14,960	(6,812)	(6,812)
Unrealized gains (losses) on cash flow hedges:
Accumulated other comprehensive income (loss) ending balance period, Before Tax	46,298	2,235
Accumulated other comprehensive income (loss) ending balance period, Tax Effect	(13,197)	(640)
Ending balance	33,101	1,595	14,960
Unrealized gains (losses) on debt securities available for sale
Changes in accumulated other comprehensive income (loss) by component, net of tax
Accumulated other comprehensive income (loss) beginning balance period, Before Tax	21,192	(9,528)	(9,528)
Accumulated other comprehensive income (loss) beginning balance period, Tax Effect	(6,032)	2,716	2,716
Beginning balance	15,160	(6,812)	(6,812)
Unrealized gains (losses) on debt securities available for sale:
Unrealized holding gains (losses) on debt securities available for sale, Before Tax	30,086	6,799
Unrealized holding gains (losses) on debt securities available for sale, Tax Effect	(8,589)	(1,940)
Unrealized holding gains (losses) on debt securities available for sale, Net of Tax	21,497	4,859
Unrealized gains on debt securities transferred from held to maturity to available for sale, Before Tax		4,780
Unrealized gains on debt securities transferred from held to maturity to available for sale, Tax Effect		1,364
Unrealized gains on debt securities transferred from held to maturity to available for sale, Net of Tax		3,416
Amounts reclassified from accumulated other comprehensive income, Before Tax	1,556	(184)
Amounts reclassified from accumulated other comprehensive income, Tax Effect	448	(52)
Amounts reclassified from accumulated other comprehensive income, Net of Tax	1,108	(132)
Unrealized gains (losses) on cash flow hedges:
Accumulated other comprehensive income (loss) ending balance period, Before Tax	49,722	2,235	21,192
Accumulated other comprehensive income (loss) ending balance period, Tax Effect	(14,173)	(640)	(6,032)
Ending balance	35,549	1,595	15,160
Unrealized gains (losses) on cash flow hedges
Changes in accumulated other comprehensive income (loss) by component, net of tax
Accumulated other comprehensive income (loss) beginning balance period, Before Tax	(280)
Accumulated other comprehensive income (loss) beginning balance period, Tax Effect	80
Beginning balance	(200)
Unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges, Before Tax	(3,129)
Unrealized holding gains (losses) on cash flow hedges, Tax Effect	892
Unrealized holding gains (losses) on cash flow hedges, Net of Tax	(2,237)
Amounts reclassified from accumulated other comprehensive income, Before Tax	(15)
Amounts reclassified from accumulated other comprehensive income, Tax Effect	4
Reclassification adjustment for realized losses (gains) on cash flow hedges	(11)
Accumulated other comprehensive income (loss) ending balance period, Before Tax	(3,424)		(280)
Accumulated other comprehensive income (loss) ending balance period, Tax Effect	976		80
Ending balance	$ (2,448)		$ (200)

Share-based Compensation (Detai

Share-based Compensation (Details) - shares	3 Months Ended
Share-based Compensation (Details) - shares	Mar. 31, 2020	Dec. 31, 2019
Share-based Compensation
Number of shares held in treasury	1,509,525	1,121,961
Restricted stock unit
Share-based Compensation
Number of shares of common stock per award	1
Deferred stock units
Share-based Compensation
Number of shares of common stock per award	1
Minimum \| Restricted stock unit
Share-based Compensation
Requisite service periods	1 year
Maximum \| Restricted stock unit
Share-based Compensation
Requisite service periods	5 years

Share-based Compensation - Awar

Share-based Compensation - Award Status (Details) - Stock option awards	3 Months Ended
	Mar. 31, 2020$ / sharesshares
Shares
Outstanding at beginning of year (in shares) \| shares	53,185
Exercised (in shares) \| shares	(5,280)
Expired (in shares) \| shares	(88)
Outstanding at end of year (in shares) \| shares	47,817
Exercisable at end of year (in shares) \| shares	47,817
Weighted-Average Exercise Price
Outstanding at beginning of year (in dollars per share) \| $ / shares	$ 22
Exercised (in dollars per share) \| $ / shares	23.26
Expired (in dollars per share) \| $ / shares	17.05
Outstanding at end of year (in dollars per share) \| $ / shares	21.87
Exercisable at end of year (in dollars per share) \| $ / shares	$ 21.87
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	5 years 6 months 29 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	5 years 6 months 29 days

Share-based Compensation - Opti

Share-based Compensation - Options Outstanding (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stock option awards
Additional disclosures
Compensation expense recognized	$ 0

Share-based Compensation - Rest

Share-based Compensation - Restricted and Deferred Stock Units (Details) - USD ($)	Feb. 05, 2020	Jul. 05, 2019	Mar. 31, 2020	Mar. 31, 2019
Restricted stock unit
Shares
Non-vested at beginning of year (in shares)			778,317
Granted (in shares)			3,808
Dividend equivalents earned (in shares)			6,612
Vested (in shares)			(8,249)
Forfeited (in shares)			(9,559)
Non-vested at end of year (in shares)			770,929
Outstanding at end of year (in shares)			770,929
Weighted-Average Grant Date Fair Value
Non-vested at beginning of year (in dollars per share)			$ 27.27
Granted (in dollars per share)			26.26
Dividend equivalents earned (in dollars per share)			25.50
Vested (in dollars per share)			29.50
Forfeited (in dollars per share)			28.96
Non-vested at end of year (in dollars per share)			27.21
Outstanding at end of year (in dollars per share)			$ 27.21
Additional disclosures
Period over which cost will be recognized	3 years
Restricted stock unit \| Members of management
Shares
Stock price (in dollars per share)		$ 26.26
Additional disclosures
Compensation expense recognized		$ 100,000
Vesting percentage (as a percent)		100.00%
Deferred stock units
Shares
Non-vested at beginning of year (in shares)			21,261
Dividend equivalents earned (in shares)			780
Forfeited (in shares)			(597)
Non-vested at end of year (in shares)			21,444
Outstanding at end of year (in shares)			91,278
Weighted-Average Grant Date Fair Value
Non-vested at beginning of year (in dollars per share)			$ 23.18
Dividend equivalents earned (in dollars per share)			25.50
Forfeited (in dollars per share)			25.50
Non-vested at end of year (in dollars per share)			23.20
Outstanding at end of year (in dollars per share)			$ 23.40
RSUs and DSUs
Additional disclosures
Compensation expense recognized			$ 1,100,000	$ 1,000,000
Amount of compensation cost to be recognized			$ 10,900,000
Period over which cost will be recognized			3 years 3 months 18 days
Employee stock purchase plan
Additional disclosures
Remaining shares available for issuance			31,057
Stock option awards
Additional disclosures
Compensation expense recognized			$ 0
First Community 2016 Equity Incentive Plan
Additional disclosures
Remaining shares available for issuance			313,136
2010 Equity Incentive Plan
Additional disclosures
Remaining shares available for issuance			552,157
2010 Equity Incentive Plan \| Restricted stock unit \| Members of management
Shares
Granted (in shares)		3,808

Outstanding Commitments and C_3

Outstanding Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Credit Commitments and Contingencies
Adoption of CECL, reserve for unfunded commitments	$ 6,500	$ 5,500
Adoption of CECL, additional provision	1,000
Commitments to extend credit
Credit Commitments and Contingencies
Financial instruments whose contract amounts represent credit risk:	1,628,461		$ 1,649,565
Standby letters of credit
Credit Commitments and Contingencies
Financial instruments whose contract amounts represent credit risk:	$ 42,774		$ 42,581

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Total Capital (to Risk Weighted Assets), Amount
Actual, Amount	$ 1,046,689	$ 1,036,143
Minimum Capital Requirement, Amount	604,488	590,826
Minimum To Be Well Capitalized, Amount	$ 755,610	$ 738,532
Total Capital (to Risk Weighted Assets), Ratio
Actual, Ratio (as a percent)	13.85%	14.03%
Minimum Capital Requirement, Ratio (as a percent)	8.00%	8.00%
Minimum To Be Well Capitalized, Ratio (as a percent)	10.00%	10.00%
Tier 1 Capital (to Risk Weighted Assets), Amount
Actual, Amount	$ 921,827	$ 922,395
Minimum Capital Requirement, Amount	453,366	443,120
Minimum To Be Well Capitalized, Amount	$ 604,488	$ 590,826
Tier 1 Capital (to Risk Weighted Assets), Ratio
Actual, Ratio (as a percent)	12.20%	12.49%
Minimum Capital Requirement, Ratio (as a percent)	6.00%	6.00%
Minimum To Be Well Capitalized, Ratio (as a percent)	8.00%	8.00%
Common Equity Tier 1 Capital (to Risk Weighted Assets), Amount
Actual, Amount	$ 847,827	$ 848,395
Minimum Capital Requirement, Amount	340,025	332,340
Minimum To Be Well Capitalized, Amount	$ 491,147	$ 480,046
Common Equity Tier 1 Capital (to Risk Weighted Assets), Ratio
Actual, Ratio (as a percent)	11.22%	11.49%
Minimum Capital Requirement, Ratio (as a percent)	4.50%	4.50%
Minimum To Be Well Capitalized, Ratio (as a percent)	6.50%	6.50%
Tier 1 Capital (to Average Assets), Amount
Actual, Amount	$ 921,827	$ 922,395
Minimum Capital Requirement, Amount	$ 372,696	$ 373,360
Tier 1 Capital (to Average Assets), Ratio
Actual, Ratio (as a percent)	9.89%	9.88%
Minimum Capital Requirement, Ratio (as a percent)	4.00%	4.00%
Busey Bank
Total Capital (to Risk Weighted Assets), Amount
Actual, Amount	$ 1,012,447	$ 1,099,449
Minimum Capital Requirement, Amount	603,538	589,681
Minimum To Be Well Capitalized, Amount	$ 754,422	$ 737,101
Total Capital (to Risk Weighted Assets), Ratio
Actual, Ratio (as a percent)	13.42%	14.92%
Minimum Capital Requirement, Ratio (as a percent)	8.00%	8.00%
Minimum To Be Well Capitalized, Ratio (as a percent)	10.00%	10.00%
Tier 1 Capital (to Risk Weighted Assets), Amount
Actual, Amount	$ 947,583	$ 1,045,701
Minimum Capital Requirement, Amount	452,653	442,261
Minimum To Be Well Capitalized, Amount	$ 603,538	$ 589,681
Tier 1 Capital (to Risk Weighted Assets), Ratio
Actual, Ratio (as a percent)	12.56%	14.19%
Minimum Capital Requirement, Ratio (as a percent)	6.00%	6.00%
Minimum To Be Well Capitalized, Ratio (as a percent)	8.00%	8.00%
Common Equity Tier 1 Capital (to Risk Weighted Assets), Amount
Actual, Amount	$ 947,583	$ 1,045,701
Minimum Capital Requirement, Amount	339,490	331,696
Minimum To Be Well Capitalized, Amount	$ 490,374	$ 479,116
Common Equity Tier 1 Capital (to Risk Weighted Assets), Ratio
Actual, Ratio (as a percent)	12.56%	14.19%
Minimum Capital Requirement, Ratio (as a percent)	4.50%	4.50%
Minimum To Be Well Capitalized, Ratio (as a percent)	6.50%	6.50%
Tier 1 Capital (to Average Assets), Amount
Actual, Amount	$ 947,583	$ 1,045,701
Minimum Capital Requirement, Amount	371,799	373,639
Minimum To Be Well Capitalized, Amount	$ 464,749	$ 467,049
Tier 1 Capital (to Average Assets), Ratio
Actual, Ratio (as a percent)	10.19%	11.19%
Minimum Capital Requirement, Ratio (as a percent)	4.00%	4.00%
Minimum To Be Well Capitalized, Ratio (as a percent)	5.00%	5.00%

Operating Segments and Relate_3

Operating Segments and Related Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)segment	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)
Operating Segments and Related Information
Number of reportable segments \| segment	3
Number of operating segments \| segment	3
Goodwill	$ 311,536		$ 311,536
Total Assets	9,721,405		9,695,729
Net interest income	69,433	$ 68,383
Non-interest income:	27,517	25,945
Non-interest expense:	60,514	57,163
Income before income taxes	19,220	35,054
Net income:	15,364	25,469
Operating segments \| Banking
Operating Segments and Related Information
Goodwill	288,436		288,436
Total Assets	9,654,171		9,632,368
Net interest income	71,573	70,638
Non-interest income:	13,168	12,783
Non-interest expense:	48,515	45,171
Income before income taxes	19,010	36,139
Net income:	14,924	26,665
Operating segments \| Remittance Processing
Operating Segments and Related Information
Goodwill	8,992		8,992
Total Assets	44,744		44,209
Net interest income	19	18
Non-interest income:	4,069	4,181
Non-interest expense:	2,903	2,764
Income before income taxes	1,185	1,435
Net income:	860	1,025
Operating segments \| Wealth Management
Operating Segments and Related Information
Goodwill	14,108		14,108
Total Assets	36,204		32,760
Non-interest income:	11,709	9,133
Non-interest expense:	6,974	5,564
Income before income taxes	4,735	3,569
Net income:	3,599	2,641
Other
Operating Segments and Related Information
Total Assets	(13,714)		$ (13,608)
Net interest income	(2,159)	(2,273)
Non-interest income:	(1,429)	(152)
Non-interest expense:	2,122	3,664
Income before income taxes	(5,710)	(6,089)
Net income:	$ (4,019)	$ (4,862)

Derivative Financial Instrume_3

Derivative Financial Instruments - Interest Rate Swaps Designated as Cash Flow Hedges (Details) - Interest rate swap - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Derivative [Line Items]
Unrealized gains (losses), net of tax	$ 0	$ 0
Cash Flow Hedging
Derivative [Line Items]
Notional amount	$ 70,000		$ 70,000
Weighted average fixed pay rates	1.80%		1.80%
Weighted average variable 3 month LIBOR receive rates	0.77%		1.90%
Weighted average maturity	3 years 7 months 9 days		3 years 10 months 9 days
Unrealized gains (losses), net of tax	$ (2,448)		$ (200)
Unrealized gain to be reclassified from OCI to interest expense during next twelve months	200
Other liabilities
Derivative [Line Items]
Derivative Liability	35,832		12,354
Other liabilities \| Cash Flow Hedging
Derivative [Line Items]
Fair value recorded in other liabilities	$ 3,400		$ 300

Derivative Financial Instrume_4

Derivative Financial Instruments - Net Gains (Losses) Relating to the Cash Flow Derivative Instruments (Details) - Interest rate contract - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Derivative cash pledged	$ 3,300	$ 300
Cash Flow Hedging
Derivative [Line Items]
Amount of (gain) loss recognized in OCI	2,237
Amount of (gain) loss reclassified from OCI to interest expense	$ (11)

Derivative Financial Instrume_5

Derivative Financial Instruments - Interest Rate Lock Commitments (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Interest Rate Lock Commitments
Derivative Financial Instruments
Notional amount	$ 268.7	$ 69.1

Derivative Financial Instrume_6

Derivative Financial Instruments - Forward Sales Commitments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Forward sales commitments
Derivative Financial Instruments
Notional amount	$ 353,600		$ 135,300
Interest rate lock commitments and forward sales commitments
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income
Net gains (losses)	(674)	$ (40)
Interest rate lock commitments and forward sales commitments \| Other assets
Fair values of derivative assets and liabilities recorded in consolidated balance sheets
Fair value recorded in other assets	5,146		1,046
Interest rate lock commitments and forward sales commitments \| Other liabilities
Fair values of derivative assets and liabilities recorded in consolidated balance sheets
Fair value recorded in other liabilities	7,344		$ 2,187
Non-interest income \| Interest rate lock commitments and forward sales commitments
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income
Gross gains	6,670	1,078
Non-interest expense \| Interest rate lock commitments and forward sales commitments
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income
Gross (losses)	$ (7,344)	$ (1,118)

Derivative Financial Instrume_7

Derivative Financial Instruments - Interest Rate Swaps Not Designated as Hedges (Details) - Interest rate swap - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income
Net gains (losses)	$ 0	$ 0
Derivative cash pledged	36,500		$ 18,100
Not designated as hedging
Derivative Financial Instruments
Notional amount	650,200		580,800
Variable rate, commercial loans that are supported by the interest rate swap contracts	325,100		290,400
Non-interest income
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income
Gross gains	23,478	3,713
Non-interest expense
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income
Gross (losses)	(23,478)	$ (3,713)
Other assets
Fair values of derivative assets and liabilities recorded in consolidated balance sheets
Fair value recorded in other assets	35,832		12,354
Other liabilities
Fair values of derivative assets and liabilities recorded in consolidated balance sheets
Fair value recorded in other liabilities	$ 35,832		$ 12,354

Fair Value Measurements - Gener

Fair Value Measurements - General Disclosures (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	$ 1,765,945	$ 1,648,257
Equity securities	4,936	5,952
Loans held for sale, at fair value	89,943	68,699
U.S. Treasury securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	45,394	51,737
Obligations of U.S. government corporations and agencies
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	90,574	163,000
Obligations of states and political subdivisions
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	284,747	268,291
Commercial mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	245,421	139,287
Residential mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	1,000,857	921,966
Corporate debt securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	98,952	103,976
Recurring basis
Financial assets and financial liabilities measured at fair value
Equity securities	4,936	5,952
Loans held for sale, at fair value	89,943	68,699
Recurring basis \| Derivative assets
Financial assets and financial liabilities measured at fair value
Fair value recorded in other assets	40,978	13,400
Recurring basis \| Derivative liabilities
Financial assets and financial liabilities measured at fair value
Fair value recorded in other liabilities	46,600	14,821
Recurring basis \| U.S. Treasury securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	45,394	51,737
Recurring basis \| Obligations of U.S. government corporations and agencies
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	90,574	163,000
Recurring basis \| Obligations of states and political subdivisions
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	284,747	268,291
Recurring basis \| Commercial mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	245,421	139,287
Recurring basis \| Residential mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	1,000,857	921,966
Recurring basis \| Corporate debt securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	98,952	103,976
Recurring basis \| Level 2
Financial assets and financial liabilities measured at fair value
Equity securities	4,936	5,952
Loans held for sale, at fair value	89,943	68,699
Recurring basis \| Level 2 \| Derivative assets
Financial assets and financial liabilities measured at fair value
Fair value recorded in other assets	40,978	13,400
Recurring basis \| Level 2 \| Derivative liabilities
Financial assets and financial liabilities measured at fair value
Fair value recorded in other liabilities	46,600	14,821
Recurring basis \| Level 2 \| U.S. Treasury securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	45,394	51,737
Recurring basis \| Level 2 \| Obligations of U.S. government corporations and agencies
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	90,574	163,000
Recurring basis \| Level 2 \| Obligations of states and political subdivisions
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	284,747	268,291
Recurring basis \| Level 2 \| Commercial mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	245,421	139,287
Recurring basis \| Level 2 \| Residential mortgage-backed securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	1,000,857	921,966
Recurring basis \| Level 2 \| Corporate debt securities
Financial assets and financial liabilities measured at fair value
Debt securities available for sale	$ 98,952	$ 103,976

Fair Value Measurements - Addit

Fair Value Measurements - Additional Quantitative Information (Details) $ in Thousands	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	$ 25,372	$ 37,079
Collateral dependent loans \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans (percent)		(2.9)
Collateral dependent loans \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans (percent)		(100)
Collateral dependent loans \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans (percent)		(57.8)
Level 3 \| Appraisal of collateral \| OREO \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
OREO (percent)	(25)	(25)
Level 3 \| Appraisal of collateral \| OREO \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
OREO (percent)	(100)	(100)
Level 3 \| Appraisal of collateral \| OREO \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
OREO (percent)	(65)	(65)
Level 3 \| Appraisal of collateral or real estate listing price \| Bank property held for sale \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Bank property held for sale (percent)	(6.2)	(6.2)
Level 3 \| Appraisal of collateral or real estate listing price \| Bank property held for sale \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Bank property held for sale (percent)	(64.9)	(71.3)
Level 3 \| Appraisal of collateral or real estate listing price \| Bank property held for sale \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Bank property held for sale (percent)	(27.3)	(40.7)
Non-recurring basis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	$ 1,413	$ 2,686
OREO	55	55
Bank property held for sale	3,413	4,004
Non-recurring basis \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	1,413	2,686
OREO	55	55
Bank property held for sale	3,413	4,004
Non-recurring basis \| Level 3 \| Appraisal of collateral \| Collateral dependent loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	1,413	2,686
Non-recurring basis \| Level 3 \| Appraisal of collateral \| OREO
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
OREO	55	55
Non-recurring basis \| Level 3 \| Appraisal of collateral or real estate listing price \| Bank property held for sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Bank property held for sale	$ 3,413	$ 4,004

Fair Value Measurements - Segre

Fair Value Measurements - Segregated by Level of Valuation Inputs (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financial assets:
Portfolio loans, net	$ 6,661,115	$ 6,633,501
Financial liabilities:
Short-term borrowings	21,358	8,551
Junior subordinated debt owed to unconsolidated trusts	71,347	71,308
Level 1 \| Carrying Amount
Financial assets:
Cash and cash equivalents	342,848	529,288
Level 1 \| Fair Value
Financial assets:
Cash and cash equivalents	342,848	529,288
Level 2 \| Carrying Amount
Financial assets:
Accrued interest receivable	27,310	27,109
Financial liabilities:
Time deposits	1,482,013	1,534,850
Securities sold under agreements to repurchase	167,250	205,491
Short-term borrowings	21,358	8,551
Long-term debt	35,595	83,600
Junior subordinated debt owed to unconsolidated trusts	71,347	71,308
Accrued interest payable	5,609	5,000
Level 2 \| Fair Value
Financial assets:
Accrued interest receivable	27,310	27,109
Financial liabilities:
Time deposits	1,490,835	1,538,597
Securities sold under agreements to repurchase	167,250	205,491
Short-term borrowings	21,364	8,552
Long-term debt	35,811	83,614
Junior subordinated debt owed to unconsolidated trusts	72,749	74,153
Accrued interest payable	5,609	5,000
Level 3 \| Carrying Amount
Financial assets:
Portfolio loans, net	6,661,115	6,633,501
Mortgage servicing rights	11,776	12,326
Other servicing rights	1,070	1,071
Level 3 \| Fair Value
Financial assets:
Portfolio loans, net	6,687,117	6,648,560
Mortgage servicing rights	13,968	18,193
Other servicing rights	1,632	1,740
Level 3 \| Senior notes \| Carrying Amount
Financial liabilities:
Long-term debt	39,708	39,674
Level 3 \| Senior notes \| Fair Value
Financial liabilities:
Long-term debt	40,441	40,099
Level 3 \| Subordinated debt \| Carrying Amount
Financial liabilities:
Long-term debt	59,273	59,248
Level 3 \| Subordinated debt \| Fair Value
Financial liabilities:
Long-term debt	$ 60,950	$ 61,514

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
Leases - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Leases
Right of use asset	$ 9,074		$ 9,490
Lease liability	9,150		$ 9,552
Rent expense under operating leases, included in net occupancy and equipment expense	$ 806	$ 659

Leases - Lease Cost and Other L

Leases - Lease Cost and Other Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Lease Costs
Operating lease costs	$ 620	$ 533
Variable lease costs	171	111
Short-term lease costs	15	15
Net lease cost	806	659
Cash paid for amounts included in the measurement of lease liabilities
Operating lease cash flows - Fixed payments	611	513
Operating lease cash flows - Liability reduction	530	$ 463
Right of use assets obtained during the period in exchange for operating lease liabilities	$ 128
Weighted average lease term (in years)		8 years 3 months 29 days
Weighted average discount rate (in percent)	3.05%	3.11%

Leases - Future Rent Commitment

Leases - Future Rent Commitments (Details) $ in Thousands	Mar. 31, 2020USD ($)
Projected minimum rental payments under the terms of leases
Remainder of 2020	$ 1,830
2021	1,814
2022	1,411
2023	1,254
2024	1,022
Thereafter	2,876
Amounts representing interest	(1,057)
Present value of net future minimum lease payments	$ 9,150